Indian River County. FEMA Map Modernization Program. View Flood Maps FEMA Map Service Center Example Indian River County Flood MAP Panel

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1 Indian River County FEMA Map Modernization Program This site was developed in an effort to inform Indian River County citizens on the implementation of the new FEMA flood maps. Flood Insurance Rate Map Modernization In support of the National Flood Insurance Program NFIP, Federal Emergency Management Agency (FEMA) has undertaken an effort of flood hazard identification and mapping to update Flood Insurance Rate Maps (FIRMs) for Indian River County. Some of the County s flood maps are more than 20 years old and may not realistically depict the existing flood risk. These maps are created to reflect the base flood event, defined as the flood having a 1-percent chance of being equaled or exceeded in any given year (also referred to as the 100- year flood). FEMA s Map Modernization entails providing flood maps and data for communities nationwide that are more accurate, easier-to-use, and readily available. FEMA has selected Indian River County and its incorporated cities to produce updated flood maps in digital format, and provide users easier access to the flood hazard data. FEMA has requested copies of all local flood related data within Indian River County to assist them with this Map Modernization process. Project Schedule Map Update Process Brief FEMA WORKS ON UPDATING FLOOD INSURANCE RATE MAPS (FIRMS) FOR INDIAN RIVER COUNTY FEMA PROVIDES PRELIMINARY NEW FIRMS TO INDIAN RIVER COUNTY APPEALS PERIOD (90 DAYS) FEMA ISSUES A LETTER OF FINAL DETERMINATION NEW FEMA FLOOD MAPS BECOME EFFECTIVE 2007 APRIL 2010 MAY 2010 DEC FEB APRIL 2011 OCTOBER 2011 View Flood Maps FEMA Map Service Center Example Indian River County Flood MAP Panel Information and resources: IRC National Flood Insurance Program Community Rating System (CRS) Indian River County Implementation IRC What is Map Modernization IRC NAVD88 Vertical Datum Conversion - Study IRC Vertical Datum Changes IRC LiDAR Brief Public Meetings (To be announced) Public Documents FEMA IRC Project Scoping Report_2008 Contacts Indian River County Community Development (772) floodmap@ircgov.com FEMA Map Assistance FEMA-MAP or ( ) FEMA: Map Modernization Web Site FEMA five year plan Florida FEMA What is the NFIP FEMA Talking Points Flood Maps NFIP Floodsmart.gov FEMA NFIP Local Official Guide Top 10 Facts for Consumers Avoiding Flood Damage Checklist Homeowners Key Quest to Ask Flood Ins Agent

2 Indian River County LiDAR Mapping For the FEMA Map Modernization Program A coalition of professional Engineers, Surveyors and GIS practitioners, including the Florida Division of Emergency Management (FDEM0, Water Management Districts, Florida Department of Environmental Protection, Army Corp of Engineers Jacksonville District, and other state and federal agencies, have come together to develop baseline specifications for orthophotography and Airborne Light Detection Ranging Systems (LiDAR) data collection for publicly funded projects within Florida. Interest in acquiring orthophotography and LiDAR has risen significantly as beneficiaries of the data learn about the many uses of remote-sensing technologies. These uses range from floodplain mapping to homeland security planning. As interest in remote sensing technologies has grown so has the understanding of the need to coordinate data collection. Growth management, map modernization/floodplain mapping, natural lands stewardship, and disaster preparedness are statewide issues with statewide impacts. A number of projects managed through state agencies, Water Management Districts, and federal and local governments have been used for conducting hydrological studies, monitoring coastline changes, creating highly accurate elevation data, managing growth, and more. Beneficiaries of statewide datasets include local county and city governments, a majority of state agencies (especially those with growth management, land stewardship, and disaster management responsibilities), and federal partners. In an effort not to duplicate acquisitions Indian River County has collaborated with FDEM to acquire LiDAR in defined areas extending west of I-95, including Fellsmere and all municipalities (Reference LiDAR project limits and Contour map below). All of the LiDAR has been acquired and processed; the project will merge the overlapping LiDAR datasets together into a seamless mosaic and utilized in the FEMA Map Modernization GIS and Mapping efforts. Since watersheds do not follow county or municipal boundaries, this seamless mosaic dataset will be a valuable asset for floodplain mapping and watershed management. For more information on the FDEM acquisition schedules Link - County Contacts: Michael O Brien P.S.M., C.F.M., County Surveyor (772) mobrien@ircgov.com Will Rice GIS Department Manager (772) wrice@ircgov.com Indian River County TH Street Vero Beach, FL 32960

3 Indian River County LiDAR Mapping For the FEMA Map Modernization Program LiDAR Projects Limits Map

4 Indian River County LiDAR Mapping For the FEMA Map Modernization Program LiDAR Contour Map example

5 Indian River County FEMA Map Modernization Program Map Update Process This site was developed in an effort to inform Indian River County citizens on the implementation of the new FEMA flood maps. Map Update Process Pre-Scoping Indian River County will send letters and informational packets to those communities that will be funded for Flood Map Modernization. This letter kicks off the modernization process with what are known as Pre-scoping Activities.. The purpose of these activities is to research and accumulate resources that will contribute to the map update project. Such activities include digital base map inventories, mapping needs assessments, and Letters of Map Change collection. The digital base map inventories involve obtaining the best available ailable base map materials, such as corporate limits, roads, aerial photography, stream centerlines, and topographic data. Mapping needs assessments include the collection of needs from FEMA s Mapping Needs Update Support System (MNUSS). This system was developed to track and prioritize mapping needs identified by communities. Indian River County will perform an in-house mapping needs assessment by compiling needs from community files (Community Assistance Visit Reports, correspondence, effective flood map panels) and an approximate (unnumbered) A-Zone analysis. This analysis involves measuring densities of structures within or near an approximate A-Zone. The Study Contractor and Indian River County will also use this time to compile all approved Letters of Map Change (LOMCs), including Letters of Map Amendment, Letters of Map Revision Based on Fill, and Letters of Map Revision. These LOMCs will be addressed during Map Production,, but an accurate list is necessary so all are addressed in the project. Scoping Meeting The next stage of this process is called the Scoping Meeting.. This meeting presents an opportunity for all interested parties to gather, finalize the scope of project and confirm project task assignments. The scope of project formally identifies where new flood studies will be conducted, their type, and their limits. Invited to this meeting are representatives from FEMA, Indian River County,, the Study Contractor (if used), and communities throughout the county being updated. Mapping needs play an integral role in the Scoping Meeting as well. Because funding is limited for this map update, new flood studies will be few. However, the meeting provides an excellent opportunity for federal, state, and private entities to collect local mapping needs. Such needs will be documented and provided as impetus for future flood study funding. Page 1 of 3

6 Indian River County FEMA Map Modernization Program Map Update Process Map Production Following the conclusion of the Scoping Meeting,, entities involved in the map update begin their partnership roles in Map Production. This step of the update process involves the completion of all tasks identified and assigned during the Scoping Meeting.. For instance, the paper flood maps will be digitally scanned and geo-registered during this phase. This is also the time when the newly created digital flood layers will be fine tuned to fit the best available topographic data. If any flood studies are performed, this would be the phase for their completion and incorporation into the new maps. Letters of Map Change (LOMCs) will also be addressed during this phase. Each FEMA-approved map change will be handled in one of four ways: 1) incorporation into the new maps; 2) revalidation; 3) superseded; or 4) case-by-case review. Letters of Map Revision (LOMRs) (not those based on fill, or LOMR-Fs) will be incorporated into the new flood maps. Large-scale LOMR-Fs and Letters of Map Amendment (LOMAs) may be incorporated into the new maps depending on their size. However, most LOMAs and LOMR-Fs will be revalidated since they are PAGE 1 OF 3 too small in scale to be represented on the maps. If a new study has been performed on a watercourse near any LOMCs, the LOMCs may be superseded or may need case-by-case review. Digital maps created during this phase will be reviewed by FEMA so as to ensure that they meet the Guidelines and Specifications for Flood Hazard Mapping Partners.. For further information about these guidelines, click here ( Preliminary Maps Preliminary Maps and a preliminary Flood Insurance Study (FIS) are released for public review when all tasks have been completed, and the new digital flood maps have been printed. Each community will receive copies of the preliminary flood maps, a preliminary Flood Insurance Study report, and a preliminary Summary of Map Actions (SOMA). This last document summarizes what happened to all of the Letters of Map Change affected by the map update. For further information, please see the description of Map Production. Once the Preliminary Maps are released, community officials are encouraged to review the maps for accuracy and completeness. In order to aid in this effort, Indian River County has developed the Preliminary Map Review Checklist specifically for local officials. This list will guide them during their review, and it will provide them a way to document evidence for any issues they may have with the new maps. Page 2 of 3

7 Indian River County FEMA Map Modernization Program Map Update Process Flood Risk Information Open House Once the Preliminary Maps are released ed and communities have an opportunity to review them, FEMA will coordinate Flood Risk Information Open House meetings. Federal and state officials and the Study Contractor will meet with community officials to discuss the new maps, any issues associated with them, and their implications. Once this meeting has concluded, FEMA, Indian River County and community officials will have an opportunity to answer public inquiries regarding the preliminary maps. Questions generally range in topic from flood insurance and building requirements to mitigation opportunities and map changes. Appeals Period/Comment Period After the Flood Risk Information Open House,, FEMA will publish the preliminary base flood elevations (BFEs) in the Federal Register (only if BFEs have changed), and they will notify the CEO of each community regarding this publishing. Additionally, FEMA will post this information in local newspapers twice in a two-week week period. On the date of the second publication, the 90-day Appeals Period begins, and this is when stakeholders may submit new flood data (appeals) or map corrections (protests) to their community floodplain officials for possible incorporation into the new digital FIRMs. At the end of Appeals Period, FEMA will resolve all appeals and protests s to finalize the maps and the Flood Insurance Study report. If BFEs have not changed due to the map update, a 90-Day Appeals Period will not be held. Rather, 30- Day Comment Period will be held in its place and this will still provide citizens and community officials an opportunity to submit protests. Letter of Final Determination When the maps are finalized, FEMA will issue the communities a Letter of Final Determination (LFD), and this initiates the mandatory update of their floodplain regulations. A community has six months from the LFD to update their flood damage reduction regulations. This timeframe includes the Indian River County and community s review and approval time; so, they actually have less than six months for this update. If a community s s floodplain regulations are not approved by Indian River County and adopted by the effective date of the maps, the community will be suspended from the NFIP. Potential consequences associated with suspension include flood insurance unavailability and some disaster assistance unavailability. Flood Maps Effective Communities have six months from the date of the Letter of Final Determination to update their flood damage reduction regulations to reflect the new maps. After this period, the new maps are effective, and are the tools the communities must use to implement their floodplain regulations. Most flood insurance policies written on or after the effective date will be based on the flood hazard data on the new maps. In terms of logistics, the map update process takes approximately 2-3 years from the initial Pre- Scoping Activities until the maps become effective. This period of time depends, in part, on thetypes of studies conducted in a given area and the amount of floodplain located within its boundaries. Page 3 of 3

8 Indian River County NAVD88 Study and Planning Indian River County Survey Section May 2009 FAST FACTS Vertical datum is used to determine land elevations. Whereas NGVD29 is based on an average of 26 points, NAVD88 is based on a single point in Quebec. Benefits of NAVD88 Benefits from conversion to the new vertical datum include: More accurate floodplain modeling leads to increased public safety enhanced flood insurance data and improved erosion modeling. Navigation management is improved by precisely positioning dredges and dredge materials, determining the real rate of sea level rise and improving aircraft navigational aids. Surveying for resource management, construction, agriculture, permitting and tax assessment is made less expensive and more accurate. Building roads and Public Works projects is made easier with consistent datum and enhanced accuracy of vertical data, improved ability to delineate drainage basins and better determination of slope gradients. Feedback sought on upgrading and converting vertical datum for accuracy and compatibility Indian River County is seeking input from local professionals and governments on upgrading the way it estimates vertical data, a decision that would impact mapping countywide. Agencies across the state and country are switching their vertical datum from the National Geodetic Vertical Datum of 1929 (NGVD29) to the North American Vertical Datum of 1988 (NAVD88). By making this change, Indian River County and local governments would benefit from more accurate and consistent data, and improved communication with other agencies. With enough local support, the County will begin planning the conversion to NAVD88. The initial study is expected provide a roadmap to the conversion process. Background A vertical datum defines a system for elevation comparisons. It is used in floodplain management, waterway navigation management, roadway design, agricultural management and surveying in general. NGVD29 was established as the standard in Sea levels naturally changed in decades since, but the designation itself was based on certain faulty assumptions. NAVD88 was established in It is more accurate because it references a single point. NGVD29 and NAVD88 measurements differ as much as three feet in some areas. In Indian River County the difference is approximately 1.5 feet (decimal). Example elevation = 5.40 (NGVD 1929) = /- (NAVD 1988) (Cont on back)

9 Indian River County NAVD88 Study and Planning Indian River County Survey Section May 2009 Page 2 To provide feedback Professionals, Governments and agencies interested in the Indian River County planning study for conversion to NAVD88 should contact: Michael O Brien P.S.M., C.F.M., County Surveyor (772) mobrien@ircgov.com OR Andrew Sobczak Senior Environmental Planner (772) , asobczak@ircgov.com Who uses NAVD88? Governments in the United States, Mexico and Canada began adopting NAVD88 in Different agencies using different data necessitates a conversion process that takes time and can lead to errors. Agencies currently using NAVD88 include: The Federal Emergency Management Agency (FEMA), which publishes all new mapping materials in NAVD88 The U.S. Army Corps of Engineers The National Geodetic Survey, no longer supports or maintains NGVD29 Florida Department of Transportation (FDOT) Various Florida Counties The Saint Johns River Water Management District (SJRWMD) will soon use NAVD88. Indian River County TH Street (Bldg A) Vero Beach, FL

10 Indian River County Information about the National Flood Insurance Program (NFIP) and County's implementation: For the FEMA Map Modernization Program Information about the National Flood Insurance Program (NFIP) and County's implementation: The National Flood Insurance Program (NFIP) was initially created by Congress in 1968 with the passage of the National Flood Insurance Act. In 1973, the passage of the Flood Disaster Protection Act mandated that buildings located within identified flood hazard areas have flood insurance coverage as a condition of federal aid or loans from federally-insured banks and savings and loans, and as a condition for receiving federal disaster assistance. In 1978, Indian River County officially entered into the NFIP with the federal publication and implementation of the initial Flood Insurance Rate Map for unincorporated Indian River County. Indian River County is responsible for implementing the minimum requirements of the NFIP, including the regulation of development to ensure compliance with the type of construction and minimum elevations required by the various flood zones. In 1992, the County voluntarily entered into the NFIP s Community Rating System (CRS) program, which is designed to reward participating communities with discounted flood insurance premium rates in return for implementing more than just the minimum, NFIP, requirements. Indian River County is currently rated as a Class 6 community in the CRS program which provides up to a 20% discount on flood insurance policy premium rates. For more information; FEMA: The National Flood Insurance Program (NFIP) FEMA: What is NFIP FEMA: Community Rating System (CRS)

11 TALKING POINTS Flood Maps FLOODING CAN BE DANGEROUS AND COSTLY. FLOOD HAZARD MAPS IDENTIFY FLOOD RISKS AND HELP INCREASE THE PUBLIC S FLOOD HAZARD AWARENESS. A Flood Insurance Rate Map (FIRM) is a joint local/federal floodplain management tool issued by the Federal Emergency Management Agency (FEMA). A FIRM is adopted by communities to guide floodplain management decisions and set flood insurance rates. A floodplain is the part of the land where water collects, pools and flows during the course of natural events. Such areas are classified as Special Flood Hazard Areas (SFHA) and are located in a 100-year flood zone. The term 100 year flood refers to a flood that has a 1 percent chance of occurring in any given year; it is not a flood that will occur once every 100 years. All flood zones are labeled on a flood map with a lettering system. To learn more or to identify your flood zone, visit If you live in a high-risk area, also known as a Special Flood Hazard Area (SFHA), and have a mortgage from a federally regulated lender, you are required to purchase a flood insurance policy. However, everyone in an SFHA should invest in flood insurance coverage. If you live in a low- to moderate-risk area, you are still at risk for flooding and should consider your flood insurance options. Outside of a high-risk area, coverage can start as low as $112 a year. FLOOD MAPS SHOW FLOOD RISKS AND SUPPORT A FLOOD INSURANCE PROGRAM THAT ENABLES HOMEOWNERS, RENTERS AND BUSINESS OWNERS TO BE FINANCIALLY PROTECTED. Each community that chooses to participate in the National Flood Insurance Program (NFIP) works with FEMA. Together, they collect the information needed to create an accurate FIRM. Flood maps are used to locate a property within a particular flood zone and by community officials for decisionmaking. When considering the purchase or renewal of a flood insurance policy, you will need to know whether your property is in a low- to moderate- or high-risk area to determine which flood insurance policy is right for you. To view your community s flood map, visit msc.fema.gov or call the FEMA Map Assistance Center toll-free at FEMA-MAP ( ) for information on where the map repository for your community is located. IF YOU LIVE IN A HIGH-RISK AREA (SFHA) AND HAVE A MORTGAGE FROM A FEDERALLY REGULATED LENDER, YOU ARE REQUIRED TO PURCHASE A FLOOD INSURANCE POLICY. Every homeowner, business owner and renter in a high-risk area is at significant risk for flooding and should be protected with flood insurance whether or not their lender requires it. Flooding in high-risk areas could, has and will occur. In fact, during the term of a 30-year mortgage, there is a 26 percent chance that a home in a high-risk area will experience flooding. Help everyone in your community to understand their flood risk. If you live in a low- to moderate-risk area, flood insurance is still a vital investment to ensure that you have protection against the devastating effects of flooding. MARCH 2007 PAGE 1

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13 Floods can happen anywhere, at any time. Approximately 20 to 25 percent of all flood insurance claims occur outside of a Special Flood Hazard Area. Even if you live outside the high-risk flood zone, and thus are not required by law to purchase flood insurance, you are still at risk for flooding and should consider flood insurance. Flooding is usually not covered by homeowners insurance. More than 20,200 communities in all 50 U.S. states and its territories voluntarily participate in the NFIP, representing about 95 percent of all properties in the nation s high-risk areas. Sound floodplain management planning and regulations save the nation an estimated $1.1 billion in prevented flood damages annually. Also, structures built to NFIP criteria experience 80 percent less damage than structures not built to such standards. Creating stronger and safer communities reduces loss of life and property, enables individuals and localities to rapidly recover from future events, and lessens the financial impact on state, tribal and local governments as well as on the U.S. Treasury. FLOOD HAZARDS ARE DYNAMIC: MANY FLOOD MAPS MAY NOT REFLECT RECENT DEVELOPMENT OR NATURAL CHANGES IN THE ENVIRONMENT. In an effort to provide flood hazard maps that reflect current flood risks and areas of recent growth, FEMA s Map Modernization effort is in the process of developing up-to-date, reliable, Internet-accessible information about flood risks. Map Modernization may affect flood insurance requirements for some properties. Owners of properties mapped into a high-risk area may be required to carry flood insurance as a part of their mortgage agreement. For property owners or renters changing from a high-risk area to one of low or moderate risk, flood insurance is optional, but the risk for flooding has only been reduced, not removed. Approximately 20 to 25 percent of all flood insurance claims occur in low- to moderate-risk areas. Money-saving insurance options are available. Insurance costs may rise for those whose flood designation increases from low or moderate to high risk. However, property owners may be able to save money by purchasing insurance prior to final map adoption a process known as grandfathering. For those moving from a high-risk to a low- or moderate-risk area, an existing flood insurance policy may be converted to a lower cost Preferred Risk Policy. Visit FloodSmart.gov or call to learn how to prepare for floods, how to purchase a flood insurance policy, and what the benefits are of protecting your home and property against flooding. MARCH 2007 PAGE 2

14 Indian River County Vertical Datum Changes For the FEMA Map Modernization Program Vertical Datum Changes In an effort to lessen the impact of flooding, Congress created the National Flood Insurance Program (NFIP) in In partnership with the FEMA and the NFIP, the Indian River County Floodplain Mapping Program was created to update the Flood Insurance Rate Maps (FIRMs) for the entire area. One of the main goals of this effort is to more accurately identify the boundaries of flood hazard areas. The limits of these flood hazard areas are determined by comparing flood elevations with digital elevation data. To ensure that all the elevations used are based on a common reference system, a FIRM must reference a single vertical datum. What is Vertical Datum? A vertical datum is a set of constants that defines a system for comparison of elevations. In the NFIP, a vertical datum is important because all elevations need to be referenced to the same system. Otherwise, surveys using different datum s would have different elevations for the same point. Historically, the FIRMs have referenced the National Geodetic Vertical Datum of 1929 (NGVD 29). With FIRM updates, a more accurate vertical datum will be used - the North American Vertical Datum of 1988 (NAVD 88). Why is the Vertical Datum Changing? A datum needs to be updated periodically because geologic changes to the surface of the earth occur; these changes are due to subsidence and uplift or gradual changes in sea level. In addition, the older vertical datum (NGVD 29) was flawed because of erroneous assumptions that mean sea level at different tidal stations represented the same elevation (zero). With the outdated vertical datum, points at 0.0' NGVD 29 have, in fact, different elevations for a variety of reasons. We can now more accurately measure these elevation differences with an expanded geodetic network, further warranting the use of the new vertical datum. Indian River County s mapping effort provides an opportunity to produce new maps using NAVD 88 and expedite the use of the newer vertical datum. When is the Vertical Datum Changing? Elevations in NAVD 88 should be used for floodplain management and flood insurance purposes (e.g., elevation certificates) the day that a new FIRM becomes effective for a county. (Anticipated effective date late 2010) (Cont)

15 Indian River County Vertical Datum Changes For the FEMA Map Modernization Program Who Will Be Impacted by the Vertical Datum Change? This change should be noted by anyone who uses a FIRM in the Indian River County area, particularly when comparing elevation data on a new FIRM with data from an old FIRM that was produced in NGVD 29. The vertical datum change impacts those who work with elevation data, such as engineers and surveyors, as well as community floodplain administrators. How are Un-revised NGVD 29 Flood Elevations Converted to NAVD 88? The difference between the two datum s varies from location to location. Therefore, an average offset (the difference between NAVD 88 and NGVD 29) has been computed for each county in the State. Where a county boundary and a flooding source with unrevised NGVD 29 flood elevations are coincident, an individual offset will be calculated and applied during the creation of the a FIRM. Flood Insurance Study reports that support the new FIRMs, will contain information on the conversion of elevations between NAVD 88 and NGVD Is Further Information Available? If you have any questions regarding vertical datum changes or the NFIP in general, please contact the FEMA Map Assistance Center toll free at FEMA MAP ( ). Additional information about the NFIP is available at

16 Indian River County What is Map Modernization For the FEMA Map Modernization Program What is Flood Map Modernization? An aggressive, multi-year initiative ( ) to update the nation's flood hazard maps, called Map Modernization, is under way in Florida and across the nation. Today, many of the nation's flood maps are outdated, severely limiting their usefulness. This partnership between state and local governments and FEMA is intended to transform the Flood Insurance Rate Maps (FIRMs), which help outline a clear picture of local flood risks, into a more reliable, easier-to-use, and readily accessible product. As part of a Cooperating Technical Partner (CTP) agreement with FEMA, Indian River County has the responsibility for the flood map modernization program for all the area it governs. The County s mission is to manage and protect the water resources of the region by balancing and improving water quality, flood control, natural systems, and water supply. The management and regulation of flood control issues in this region directly correlate to the objectives of the National Flood Insurance Program. Why Flood Maps Are Important? Flood maps are referenced an estimated 20 million times annually. Why? Close to 30 million Americans are at high risk from flooding, and almost every American faces some degree of flood risk. When hurricanes or major storms threaten Florida and other coastal communities, flood risks become very real. Florida averages 50 to 60 inches of rain a year, with most of it coming between the months of June and November. Most development is clustered along the coasts or near large waterways. And the bottom third of the peninsula is virtually flat, at or only slightly above sea level, so even moderate rains can accumulate quickly. These facts mean that the State of Florida is by far the most "at risk" state in the country in terms of flood prone properties, with over 1.8 million flood insurance policies in the state (41% of US total), yet just 5.6% of the overall population. Florida (29% of the US), 42% of the flood losses in Florida, and 35% of the total dollars paid historically in Florida Go to FEMA's to learn more about the national program.

17 FEMA Map Modernization Video The video showcases Map Mod and its accomplishments to date as of June The video is approximately 8.5 minutes long and includes a narrative of Map Mod, including the past, present, and future of mapping, while centering around the following main themes: Map Mod is a collaborative effort between FEMA and partners; Map Mod contributes to the safety of people and communities; Map Mod is a pioneer in the use of technology, materials, and methods (including data collection and delivery); and Map Mod educates and informs the public about flood risk, flood maps, and flood insurance. Watch the video.

18 Indian River County FEMA Map Modernization Program Supporting Documents Avoiding Flood Damage: A Checklist for Homeowners Community Rating System Final Scoping Report Florida Five Year Plan Summary Key Questions to Cover Talking Points Flood Maps Top Ten Facts for Consumers What is the NFIP

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20 National Flood Insurance Program Community Rating System A Local Official s Guide to Saving Lives Preventing Property Damage Reducing the Cost of Flood Insurance FEMA 573

21 How the Community Rating System Works Every year, flooding causes hundreds of millions of dollars worth of damage to homes and businesses around the country. Standard homeowners and commercial property policies do not cover flood losses. So, to meet the need for this vital coverage, the Federal Emergency Management Agency (FEMA) administers the National Flood Insurance Program (NFIP). The NFIP offers reasonably priced flood insurance in communities that comply with minimum standards for floodplain management. The NFIP s Community Rating System (CRS) recognizes community efforts beyond those minimum standards by reducing flood insurance premiums for the community s property owners. The CRS is similar to but separate from the private insurance industry s programs that grade communities on the effectiveness of their fire suppression and building code enforcement. CRS discounts on flood insurance premiums range from 5% up to 45%. Those discounts provide an incentive for new flood protection activities that can help save lives and property in the event of a flood. To participate in the CRS, your community can choose to undertake some or all of the 18 public information and floodplain management activities described in the CRS Coordinator s Manual. You re probably already doing many of these activities. To get credit, community officials will need to prepare an application documenting the efforts. The CRS assigns credit points for each activity. Table 2 lists the activities and the possible number of credit points for each one. The table also shows the average number of credit points communities earn for each activity. These averages may give a better indication than the maximums of what your community can expect. To be eligible for a CRS discount, your community must do Activity 310, Elevation Certificates. If you re a designated repetitive loss community, you must also do Activity 510,

22 Floodplain Management Planning. All other activities are optional. Based on the total number of points your community earns, the CRS assigns you to one of ten classes. Your discount on flood insurance premiums is based on your class. For example, if your community earns 4,500 points or more, it qualifies for Class 1, and property owners in the floodplain get a 45% discount. If your community earns as little as 500 points, it s in Class 9, and property owners in the floodplain get a 5% discount. If a community does not apply or fails to receive at least 500 points, it s in Class 10, and property owners get no discount. Table 1, below, shows the number of points required for each class and the corresponding discount. Table 1: How much discount property owners in your community can get Discount Rate Class SFHA* Non-SFHA** Credit Points Required 1 45% 10% 4, % 10% 4,000 4, % 10% 3,500 3, % 10% 3,000 3, % 10% 2,500 2, % 10% 2,000 2, % 5% 1,500 1, % 5% 1,000 1, % 5% % 0% * Special Flood Hazard Area ** Preferred Risk Policies are available only in B,C, and Zones for properties that are shown to have a minimal risk of flood damage. The Preferred Risk Policy does not receive premium rate credits under the CRS because it already has a lower premium than other policies. Although they are in SFHAs, Zones AR and A99 are limited to a 5% discount. Premium reductions are subject to change.

23 Table 2: What You Can Do to Get Credit The CRS grants credit for 18 different activities that fall into four series: Series Public Information Maximum Average 300 Points* Points* This series credits programs that advise people about the flood hazard, flood insurance, and ways to reduce flood damage. The activities also provide data that insurance agents need for accurate flood insurance rating. 310 Elevation Certificates Maintain FEMA elevation certificates for new construction in the floodplain. (At a minimum, a community must maintain certificates for buildings built after the date of its CRS application.) 320 Map Information Service Provide Flood Insurance Rate Map (FIRM) information to people who inquire, and publicize this service. 330 Outreach Projects Send information about the flood hazard, flood insurance, flood protection measures, and/or the natural and beneficial functions of floodplains to flood-prone residents or all residents of a community. 340 Hazard Disclosure Real estate agents advise potential purchasers of flood-prone property about the flood hazard. Regulations require notice of the hazard. 350 Flood Protection Information The public library and/or community s website maintains references on flood insurance and flood protection. 360 Flood Protection Assistance Give inquiring property owners technical advice on how to protect their buildings from flooding, and publicize this service. Series 300 Total *Maximum and average points are subject to change. See the current CRS Coordinator s Manual for the latest information.

24 Series Mapping and Regulations Maximum Average 400 Points* Points* This series credits programs that provide increased protection to new development. 410 Additional Flood Data 1, Develop new flood elevations, floodway delineations, wave heights, or other regulatory flood hazard data for an area not mapped in detail by the flood insurance study. Have a more restrictive mapping standard. 420 Open Space Preservation Guarantee that currently vacant floodplain parcels will be kept free from development. 430 Higher Regulatory Standards 2, Require freeboard. Require soil tests or engineered foundations. Require compensatory storage. Zone the floodplain for minimum lot sizes of 1 acre or larger. Require coastal construction standards in AE Zones. Have regulations tailored to protect critical facilities or areas subject to special flood hazards (for example, alluvial fans, ice jams, subsidence, or coastal erosion). 440 Flood Data Maintenance Keep flood and property data on computer records. Use better base maps. Maintain elevation reference marks. 450 Stormwater Management Regulate new development throughout the watershed to ensure that post-development runoff is no worse than pre-development runoff. Regulate new construction to minimize soil erosion and protect or improve water quality. Series 400 Total 5,

25 Series Flood Damage Reduction Maximum Average 500 Points* Points* This series credits programs that reduce the flood risk to existing development. 510 Floodplain Management Planning Prepare, adopt, implement, and update a comprehensive flood hazard mitigation plan using a standard planning process. (This is a minimum requirement for all repetitive loss communities.) 520 Acquisition and Relocation 3, Acquire and/or relocate flood-prone buildings so that they are out of the floodplain. 530 Flood Protection 2, (Protection of existing floodplain development by floodproofing, elevation, or minor structural projects.) 540 Drainage System Maintenance Conduct periodic inspections of all channels and retention basins, and remove debris as needed. Series 500 Total 6,

26 Series Flood Preparedness Maximum Average 600 Points* Points* This series credits flood warning, levee safety, and dam safety projects. 610 Flood Warning Program Provide early flood warnings to the public, and have a detailed flood response plan keyed to flood crest predictions. 620 Levee Safety Maintain existing levees not otherwise credited in the flood insurance rating system that provide some flood protection. 630 Dam Safety (All communities in a state with an approved dam safety program receive some credit.) Series 600 Total 1, All Series Total 14,850 2,023

27 Extra Credit Your community can get extra credit points in addition to the points listed in the table if you coordinate your activities through a comprehensive floodplain management plan. Also, if your community faces growth pressures, the mapping and regulation activities in Series 400 receive extra credit. See the CRS Coordinator s Manual for full details. Many communities can qualify for what the CRS calls uniform minimum credit, based on the activities a state or regional agency implements on behalf of its communities. For example, some states have disclosure laws eligible for credit under activity 340, Flood Hazard Disclosure. Any community in those states can receive the uniform minimum credit. Your community may want to consider floodplain management activities not listed in the CRS Coordinator s Manual. You should evaluate these activities for their ability to increase public safety, reduce property damage, avoid economic disruption and loss, and protect the environment. In addition, you can request a review of these activities to determine whether they should be eligible for CRS credit. FEMA welcomes innovative ways to prevent or reduce flood damage.

28 How to Apply Participation in the CRS is voluntary. If your community is in full compliance with the rules and regulations of the NFIP, you may apply. There s no application fee, and all CRS publications are free. Your community s chief executive officer (that is, your mayor, city manager, or other top official) must appoint a CRS coordinator to handle the application work and serve as the liaison between the community and FEMA. The coordinator should know the operations of all departments that deal with floodplain management and public information. And the coordinator should be able to speak for the community s chief executive officer. The first step in the application process is to get a copy of the CRS Application, which contains all the instructions and procedures you need for preparing and submitting your community s initial application for a CRS classification. The CRS Application includes easy-to-follow worksheets that provide credits for applicable activities. The CRS Application also identifies the documentation you must submit to support the credits you are requesting. You may also want to order a copy of the CRS Coordinator s Manual, which describes the program in full and provides specific information, including eligible activities, required documentation, and resources for assistance. Your designated CRS coordinator should fill out and submit your application. Help is also available through the contact information below. The CRS will verify the information and arrange for flood insurance premium discounts. To order CRS publications at no charge, fax the order form on the following page to , or mail to the address below.you can also your request to nfipcrs@iso.com. Both the CRS Application and the CRS Coordinator s Manual are also available at FEMA s CRS Resource Center website For more info, write, phone, or fax: NFIP/CRS P.O. Box Indianapolis, IN Telephone: Fax: nfipcrs@iso.com

29 Order Form Fax to: Please send me these CRS publications: No. of Copies Document CRS Coordinator s Manual CRS Application Name Phone Title Street City State ZIP Community Name NFIP Number (if applicable) (if applicable)

30

31 FINAL SCOPING REPORT Indian RIVER COUNTY, FLORIDA CONTRACT NO. EMA-2002-CO-0011A TASK ORDER 017 MARCH 2008

32 Scoping Report Indian River County, Florida EMA-2002-CO-0011A Task Order 017 I. BACKGROUND... 1 TABLE 1: STATISTICAL INFORMATION... 1 II. MEETINGS AND 44 CFR PART 66 COMPLIANCE:... 2 III. PROJECT OVERVIEW... 2 TABLE 2: MAP INFORMATION... 3 TABLE 3: CURRENT STUDY INFORMATION... 7 TABLE 4A: COASTAL FLOODING SOURCES TO BE STUDIED TABLE 4B: RIVERINE FLOODING SOURCES TO BE STUDIED TABLE 4C: JUSTIFICATION FOR NEW DETAILED STUDIES TABLE 4D: JUSTIFICATION FOR REDELINEATION TABLE 4E: NATIONAL METRICS IV: Partner Contributions: 50 TABLE 5: PARTNER CONTRIBUTIONS TABLE 6: GIS DATA LAYERS AVAILABLE V: PROJECT STATUS: VI. PROJECT FUNDING VII. SUMMARY TABLE 7: TOTAL STUDY MILEAGE BY TYPE OF STUDY i

33 Attachments A. Community Partner Memorandum of Agreements B. Outreach/Pre-Scoping Meeting Documents C. Scoping Meeting Documents D. MIP Supplemental Funding Spreadsheet E. Proposed DFIRM Format F. Proposed DFIRM Paneling Scheme Map G. Vertical Datum Shift Calculations H. Indian River County Water Control Districts I. Levee Locations J. Scoping Map ii

34 FEMA Region IV IDIQ Project Scoping Report Indian River, Florida EMA-2002-CO-0011A Task Order 017 I. Background This project involves the countywide re-mapping effort for Indian River County, Florida and the incorporated communities as part of the FEMA Map Modernization Program. In addition to unincorporated Indian River County (CID #120119), participating incorporated communities include the Cities of Fellsmere (CID# ), Sebastian (CID# ), and Vero Beach (CID# ), as well as the Towns of Indian River Shores (CID# ) and Orchid (CID# ). The remapping effort involves new hydrologic and hydraulic analyses, and the creation of new Digital Flood Insurance Rate Maps (DFIRMs). Table 1, below, presents statistical data for Indian River County. Table 1: Statistical Information Statistical Data Indian River County Area (mi 2 ) 540 Population County 130,100 Density (people / mi 2 ) 259 Growth (% / year) 15.2 % of Total State 0.72 Flood Insurance Policies 25,801 Claims 1,438 Repetitive Losses Number of Losses 415 Number of Properties 195 Declared Disasters since Number of LOMC 144 Population statistics based on 2006 estimate; Growth from April 2000 to July 2006 Community Partner Memorandums of Agreement (MOAs) from each community are included as Attachment A. The Indian River Shores MOA will be provided shortly. 1

35 II. Meetings and 44 CFR Part 66 Compliance: Watershed IV Alliance members conducted an initial Outreach/Pre-Scoping Meeting with County and Community officials on September 25, 2007, and held a subsequent Scoping Meeting on October 18, Part 66 compliance: The IDIQ Partner has begun and has on record its Case file and docket? YES NO The IDIQ Partner has written record of its initial contact made to the local communities affected by this map modernization project? YES NO The IDIQ Partner has written record of its request for additional flood study data and base information from the local communities? YES NO III. Project Overview Prior to the Scoping Meeting for Indian River County, the mapping needs were reviewed in FEMA s Mapping Needs Update Support System (MNUSS) database for all the communities. For Indian River County, the active needs consist of addition of LOMCs, updates to the corporate limits, addition of road names, and revised and/or new detailed studies for unnamed tributaries on effective panels 0168E and 0158E, all canals and streams on panels 0050E and 0125E, the North Relief Canal on panels 0089E, 0090E, and 0155E, and the South Relief Canal on panel 0165E. For the City of Vero Beach, the only active need consists of the addition of benchmarks. For the City of Sebastian, the active needs consist of Base Flood Elevations (BFEs) for all Zone As within the community on effective panels 0076E, 0078E, 0079F, and 0087E. No active needs were identified for the remaining communities within Indian River County. A Scoping Meeting for the Indian River County mapping project was held on October 18, 2007 at the Indian River County Administration Building B (North), 1 st Floor, Room 501 in Vero Beach, Florida. The attendee list and minutes from the Scoping Meeting (and Pre-Scoping Meeting) are included as Attachments B and C. The purpose of the meeting was to: Identify all key participants in the study Involve the communities in identifying current study needs 2

36 Collect available GIS and engineering data potentially relevant to this Flood Insurance Study (FIS) Collect copies of each community s floodplain ordinance. Floodplain ordinances for the City of Fellsmere and Town of Indian River Shores are expected shortly. Preview the various phases and timelines involved in a FIS Solicit community involvement in the overall study The effective FIS for Indian River County, dated May 4, 1989, was developed in a countywide format. There are currently 28 printed effective FIRM panels, with revisions to 3 panels made on July 2, 1992, 1 panel on May 3, 1993, and 1 panel on June 30, Most of the maps have a suffix of E, however, the revised panels previously mentioned use suffixes of either F or G. A summary of this effective mapping information is also provided in Table 2. The proposed new DFIRMs will have a suffix of H. Table 2: Map Information Community Countywide CID Panel Count Effective FIRM Date Suffix Proposed Panel Suffix Count Indian River County and Incorporated Areas May 4, 1989/ July 2, 1992/ May 3, 1993/ June 30, 1999 E/F/G 74* H * 56 1:6,000-scale panels, 9 1:12,000-scale panels, and 9 1:24,000 scale panels DFIRMs will be ortho-based, and will use the standard collar format. A typical panel is provided in Attachment E, with the proposed DFIRM paneling scheme included as Attachment F. Results of the Scoping Meeting with the communities yielded mapping requirements of approximately 5.3 of Detailed Study streams and approximately 0.3 square of Detailed Study basins; approximately of redelineation of effective detailed study streams and 30.7 square of redelineation of effective detailed study basins; refinement and re-establishment of approximately of effective Zone A streams and 2.5 square of effective Zone A basins; and, approximately 22.3 of coastal redelineation. The scope yields a total of approximately of stream reach, 33.5 square of basins, and 22.3 of coastline to be mapped as a part of this project. The final scope yields a considerable level of mapping mileage and square mileage, however, there are still unmet mapping needs to be addressed when future funding is available. These unmet mapping needs are summarized below: Revised storm surge analyses, specifically, for flooding on effective panel 0158E. 3

37 Establishment of BFEs for the area currently identified as Zone A, approximately located southwest of the intersection of Interstate 95 and State Road 60. A revised floodway analysis along Saint Sebastian Creek/South Prong Creek. Establishment of BFEs for an unmapped area along 12 th Street, between 27 th Avenue and 43 rd Avenue. Establishment of BFEs for the remaining Zone As in the City of Sebastian Based on Appendix B of the FEMA Guidelines, effective data referencing the National Geodetic Vertical Datum of 1929 (NGVD29) will be converted to the North American Vertical Datum of 1988 (NAVD88) using the CORPSCON software. The maximum offset from the countywide average was calculated to be 0.14 foot, which is within the 0.25 foot tolerance, therefore a countywide average vertical datum conversion factor will be used for the Indian River study. The countywide average shift is feet from an elevation in NGVD29 to NAVD88. The vertical datum shift calculations and control points used are provided in Attachment G. All new hydrologic modeling, surveys, topographic data, and mapping will reference NAVD88 with vertical units measured in U.S. feet. All spatial data will be projected to the State Plane Coordinate System, Florida East, and will reference the North American Datum of 1983 (NAD83), with horizontal units measured in U.S. feet. For Indian River County, approximately 266 square of Lidar data will be made available for the study, and will be used as the primary basis of the detailed hydrologic analyses as well as floodplain delineations. The remaining portions of the county will be covered by 5-ft-interval USGS contours. The vertical datum of the USGS contours will remain NGVD29, since the datum shift value is not a whole number, however, all elevation labeling will ultimately reference NAVD88. The Lidar contractors are expected to provide a Quality Control report with the delivery of the final products, and since the original Florida DEM project and the ensuing additional contracts with Indian River County to specifically require conformance to FEMA specifications, no issues of accuracy are foreseen. Using the Lidar data, detailed hydrologic analyses will be performed for approximately 5.3 of stream and 0.3 square of basin which are currently identified as Zone A. The numerical analyses will be conducted using FEMAapproved hydrologic models, and methodology outlined in the FEMA Guidelines. Additionally, design storm selection will be based on the document Florida Design Storm Criteria, An Evaluation and Discussion of the Appropriate use of Existing Criteria in Flood Insurance Studies in Florida by Dr. Zhida Song-James. A key technical consideration for hydrologic studies within Indian River County are water control structures which control runoff and maintain desired water levels in the canals. The structures are operated by some of the Water Control Districts (WCDs) in Indian River County. The eastern part of the County is divided into 6 WCDs the 4

38 Fellsmere WCD, the Vero Lakes WCD, the Sebastian River WCS, the Delta Farms WCD, the St. Johns Water WCD, and the Indian River Farms WCD (Attachment H). The proposed detailed studies are located either in areas not associated with a WCD, or within the Indian River Farms WCD. Discussions with the Indian River Farms WCD and other WCDs, as well as the individual communities, are planned to ensure appropriate consideration of the control structures in calculating the 1-percentannual-flood elevations for the proposed detailed studies, as well as the areas of redelineation, where the effective 1-percent-annual-chance flood elevations relative to the control structures will need to be revalidated with respect to the original modeling assumptions. In addition to the water control structures affecting this study, the WCDs are expected to be involved with levee issues that will need to be faced in Indian River County. The identified levees are shown in Attachment I. The effective FIRMs do include areas protected from flooding by levees, such as along Vero Lakes Channel A, however, there are other mapped areas on the effective FIRMs which will need to be investigated further due to their suspicious straight edges. Further, any additional levees which may surface during the course of the study will also be documented and addressed. This also includes topographic features which may act as a levee in providing floodplain protection, although not specifically labeled as a levee. Based on guidance provided in 44 CFR Section 65.10, as well as Procedure Memorandums 30, 32, 34, and 43, the communities will be provided information regarding certification. Additional early meetings with the communities and WCDs are planned to discuss the approach required to analyze and/or map floodplains affected by levees. Finally, as a measure to conform to the requirements of the Floodplain Boundary Standards set forth in Procedure Memorandum (PM) 38, originally introduced in Section 7 of the Multi-Year Flood Hazard Identification Plan (MHIP) version 1.0, effective Zone A boundaries will be refined and reapplied on the DFIRMs based on the following procedure: Initial assessment of the quality and reliability of Zone A floodplains will be based on comments and direction from the local community officials. Existing Letters of Map Change (LOMCs) for effective Zone A flooding sources will be reviewed. By default, Letters of Map Revisions (LOMRs) will be incorporated into the DFIRMs, however, MT-1 cases, Letters of Map Revision Based on Fill (LOMR-Fs) and Letters of Map Amendment (LOMAs), will be reviewed to determine applicability to the Zone A refinement for the particular reach. Applicability includes but is not limited to availability of Base Flood Elevations, topographic data (other than the Indian River County Lidar data), or floodplain mapping. Other possible data not listed here will be reviewed with the Region to verify applicability. 5

39 In conjunction with a LOMC reconnaissance and assessment, the local community officials will be queried for similar data which perhaps was not submitted to FEMA. If no LOMCs are found, and data from the local communities exist, this data from the local communities will be treated as best available for the purposes of the Zone A refinement, and will be assessed for use based on similar requirements as MT-1 applications. If no information is available for a particular area, the Zone A floodplain boundaries will be digitized from the georeferenced effective flood maps using hard features as reference points. Consistency with the Lidar data and orthophotography will be checked. In the case of inconsistency, the floodplain boundary will be shifted and/or stretched to match features visible on the orthophotography. The community officials will be asked to validate all refined Zone A boundaries during the post-preliminary period. No new coastal analysis, either storm surge, erosion, wave height, or runup calculations, will be performed as part of this countywide map update. The coastal mapping will be treated strictly as redelineation, based on methods outlined in the Final Draft Atlantic Ocean and Gulf of Mexico Coastal Guidelines Update (Coastal Guidelines), dated February The Indian River County coastal redelineation will follow guidance provided under Scenario 1 of this document, that is, Minimal to No Shoreline Retreat. Under Scenario 1, factors dictating coastal redelineation for Indian River County include the new topographic data available, as well as the datum shift conversion from NGVD29 to NAVD88. Primary Frontal Dunes (PFDs) will be identified, and the limits of the velocity zone will be adjusted accordingly, based on the requirements of the Coastal Guidelines. Although no new coastal storm surge or wave height calculations are being performed as part of this map update, the communities will be advised that updates to the current coastal mapping will eventually occur, at which time increases to the current stillwater values and wave heights should be expected. Coastal Barrier Resource System (CBRS) zones are identified for Indian River County, and treatment of the CBRS zones will follow the guidelines set forth in Procedure Memorandum 39. Base map data will be provided to the U. S. Fish and Wildlife Service (FWS) contractor, and the FWS-endorsed CBRS data layer will be incorporated into the DFIRMs, including appropriate treatment of mapping and FIS notes. Also, as required in PM 39, paper copies of the preliminary CBRS DFIRM panels will be provided to the FWS s contractor for review. 6

40 To assist in providing more detailed information on the effective zones, the effective flooding sources in the community are shown in Table 3. Note that area measurements less than 0.05 square exist for many of the flooding sources listed in Tables 3 and 4B, however, due to the use of 2 significant digits, these figures result in values of 0.0 square. Table 3: Current Study Information ID # 1 2 Flooding Source Blue Cypress Creek Blue Cypress Creek 3 Collier Waterway 4 Collier Waterway 5 Elkcam Waterway 6 Elkcam Waterway 7 Fort Drum Creek Reach Limits Blue Cypress Creek ( , ) to Blue Cypress Creek ( , ) Blue Cypress Creek ( , ) to Blue Cypress Creek ( , ) Collier Waterway ( , ) to Collier Waterway ( , ) Collier Waterway ( , ) to Collier Waterway ( , ) Elkcam Waterway ( , ) to Elkcam Waterway ( , ) Elkcam Waterway ( , ) to Elkcam Waterway ( , ) Fort Drum Creek ( , ) to Fort Drum Creek ( , ) Reach Length Detailed Analysis or Approximate Study If Detailed, Current Hydrologic Methodology If Detailed, Current Hydraulic Methodology AE AE AE AE HEC-1 / CHANOP Regional Regression Regional Regression Regional Regression HEC-1 / CHANOP HEC-2 HEC-2 HEC-2 Coastal. Riverine, or Basin 7

41 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 8 Gum Slough 9 Indian River 10 Lateral G 11 Lateral H 12 Lateral J 13 Main Relief Canal 14 Main Relief Canal 15 Main Relief Canal 16 Main Relief Canal 17 Main Relief Canal Gum Slough ( , ) to Gum Slough ( , ) Indian River ( , ) to Indian River ( , ) Lateral G ( , ) to Lateral G ( , ) Lateral H ( , ) to Lateral H ( , ) Lateral J ( , ) to Lateral J ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) AE AE AE AE AE AE AE AE AE Joint Probability Regional Regression Regional Regression Regional Regression Regional Regression Regional Regression Regional Regression Regional Regression Regional Regression FEMA Storm Surge Model HEC-2 HEC-2 HEC-2 HEC-2 HEC-2 HEC-2 HEC-2 HEC-2 8

42 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 18 Main Relief Canal 19 Main Relief Canal 20 North Relief Canal 21 Padgett Branch Saint Sebastian Creek Schumann Waterway South Prong Creek South Prong Creek South Prong Creek Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) North Relief Canal ( , ) to North Relief Canal ( , ) Padgett Branch ( , ) to Padgett Branch ( , ) Saint Sebastian Creek ( , ) to Saint Sebastian Creek ( , ) Schumann Waterway ( , ) to Schumann Waterway ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) AE AE AE Regional Regression Regional Regression Regional Regression HEC-2 HEC-2 HEC-2 AE Regional Regression HEC-2 AE AE AE Regional Regression Regional Regression Regional Regression HEC-2 HEC-2 HEC-2 9

43 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin South Prong Creek South Prong Creek South Prong Creek South Prong Creek South Relief Canal South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Relief Canal ( , ) to South Relief Canal ( , ) 1 ( , ) to 1 ( , ) 10 ( , ) to 10 ( , ) 11 ( , ) to 11 ( , ) 12 ( , ) to 12 ( , ) 13 ( , ) to 13 ( , ) AE AE AE AE AE Regional Regression Regional Regression Regional Regression Regional Regression Regional Regression HEC-2 HEC-2 HEC-2 HEC-2 HEC-2 AE AE HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP 10

44 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 14 ( , ) 15 ( , ) to 15 ( , ) 16 ( , ) to 16 ( , ) 18 ( , ) to 18 ( , ) 2 ( , ) to 2 ( , ) 20 ( , ) to 20 ( , ) 21 ( , ) to 21 ( , ) 26 ( , ) to 26 ( , ) 27 ( , ) to 27 ( , ) 27 ( , ) to 27 ( , ) 27 ( , ) to 27 ( , ) 28 ( , ) to 28 ( , ) 29 ( , ) to 29 ( , ) AE AE AE HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP HEC-1 / CHANOP 11

45 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 3 ( , ) 30 ( , ) to 30 ( , ) 31 ( , ) to 31 ( , ) 31 ( , ) to 31 ( , ) 31 ( , ) to 31 ( , ) 32 ( , ) to 32 ( , ) 33 ( , ) to 33 ( , ) 34 ( , ) to 34 ( , ) 35 ( , ) to 35 ( , ) 36 ( , ) to 36 ( , ) 37 ( , ) to 37 ( , ) 38 ( , ) to 38 ( , ) 39 ( , ) to 39 ( , )

46 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 40 ( , ) to 40 ( , ) 41 ( , ) to 41 ( , ) 42 ( , ) to 42 ( , ) 43 ( , ) to 43 ( , ) 44 ( , ) to 44 ( , ) 45 ( , ) to 45 ( , ) 46 ( , ) to 46 ( , ) 47 ( , ) to 47 ( , ) 48 ( , ) to 48 ( , )

47 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 49 ( , ) 5 ( , ) to 5 ( , ) 50 ( , ) to 50 ( , ) 51 ( , ) to 51 ( , ) 52 ( , ) to 52 ( , ) 53 ( , ) to 53 ( , ) 54 ( , ) to 54 ( , ) 55 ( , ) to 55 ( , ) 56 ( , ) to 56 ( , ) 58 ( , ) to 58 ( , ) 59 ( , ) to 59 ( , ) 6 ( , ) to 6 ( , ) 62 ( , ) to 62 ( , )

48 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 63 ( , ) 63 ( , ) to 63 ( , ) 64 ( , ) to 64 ( , ) 65 ( , ) to 65 ( , ) 66 ( , ) to 66 ( , ) 67 ( , ) to 67 ( , ) 68 ( , ) to 68 ( , ) 69 ( , ) to 69 ( , ) 7 ( , ) to 7 ( , ) 70 ( , ) to 70 ( , ) 71 ( , ) to 71 ( , ) 72 ( , ) to 72 ( , ) 73 ( , ) to 73 ( , ) AE HEC-1 / CHANOP HEC-1 / CHANOP 15

49 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin ( , ) to 74 ( , ) 75 ( , ) to 75 ( , ) 76 ( , ) to 76 ( , ) 77 ( , ) to 77 ( , ) 78 ( , ) to 78 ( , ) 79 ( , ) to 79 ( , ) 8 ( , ) to 8 ( , ) 80 ( , ) to 80 ( , ) 81 ( , ) to 81 ( , ) 82 ( , ) to 82 ( , ) 84 ( , ) to 84 ( , ) 9 ( , ) to 9 ( , ) AE HEC-1 / CHANOP HEC-1 / CHANOP AE HEC-1 / CHANOP HEC-1 / CHANOP 16

50 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin Unnamed 1 Unnamed Tributary Unnamed Tributary Vero Lakes Channel A Vero Lakes Channel A Vero Lakes Channel A Vero Lakes Channel B Vero Lakes Channel B Unnamed 1 ( , ) to Unnamed 1 ( , ) Unnamed Tributary ( , ) to Unnamed Tributary ( , ) Unnamed Tributary ( , ) to Unnamed Tributary ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) AE Regional Regression HEC-2 AE AE Regional Regression Regional Regression HEC-2 HEC-2 17

51 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin Vero Lakes Channel B Vero Lakes Channel B Vero Lakes Channel B Vero Lakes Channel C 126 Atlantic Ocean 127 Basin Basin Basin Basin Basin 18 Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel C ( , ) to Vero Lakes Channel C ( , ) INDIAN RIVER COUNTY * ( , ) to INDIAN RIVER COUNTY * ( , ) INDIAN RIVER COUNTY * - Basin 1 - ( , ) to INDIAN RIVER COUNTY * - Basin 15 - ( , ) to INDIAN RIVER COUNTY * - Basin 16 - ( , ) to INDIAN RIVER COUNTY * - Basin 17 - ( , ) to INDIAN RIVER COUNTY * - Basin 18 - ( , ) to sq. 7.1 sq. 0.6 sq. 0.0 sq. 0.0 sq. AE AE AE VE AE AE Regional Regression Regional Regression Regional Regression Joint Probability HEC-1 / CHANOP HEC-1 / CHANOP HEC-2 HEC-2 HEC-2 FEMA Storm Surge Model HEC-1 / CHANOP HEC-1 / CHANOP Coastal Basin Basin Basin Basin Basin 18

52 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 132 Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 32 INDIAN RIVER COUNTY * - Basin 19 - ( , ) to INDIAN RIVER COUNTY * - Basin 2 - ( , ) to INDIAN RIVER COUNTY * - Basin 20 - ( , ) to INDIAN RIVER COUNTY * - Basin 21 - ( , ) to INDIAN RIVER COUNTY * - Basin 21 - ( , ) to INDIAN RIVER COUNTY * - Basin 22 - ( , ) to INDIAN RIVER COUNTY * - Basin 23 - ( , ) to INDIAN RIVER COUNTY * - Basin 24 - ( , ) to INDIAN RIVER COUNTY * - Basin 25 - ( , ) to INDIAN RIVER COUNTY * - Basin 26 - ( , ) to INDIAN RIVER COUNTY * - Basin 27 - ( , ) to INDIAN RIVER COUNTY * - Basin 30 - ( , ) to INDIAN RIVER COUNTY * - Basin 32 - ( , ) to 0.1 sq. 1.3 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.2 sq. 0.5 sq. 0.0 sq. AE HEC-1 / CHANOP HEC-1 / CHANOP Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 19

53 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 145 Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 45 INDIAN RIVER COUNTY * - Basin 33 - ( , ) to INDIAN RIVER COUNTY * - Basin 34 - ( , ) to INDIAN RIVER COUNTY * - Basin 35 - ( , ) to INDIAN RIVER COUNTY * - Basin 36 - ( , ) to INDIAN RIVER COUNTY * - Basin 37 - ( , ) to INDIAN RIVER COUNTY * - Basin 38 - ( , ) to INDIAN RIVER COUNTY * - Basin 39 - ( , ) to INDIAN RIVER COUNTY * - Basin 4 - ( , ) to INDIAN RIVER COUNTY * - Basin 40 - ( , ) to INDIAN RIVER COUNTY * - Basin 42 - ( , ) to INDIAN RIVER COUNTY * - Basin 43 - ( , ) to INDIAN RIVER COUNTY * - Basin 44 - ( , ) to INDIAN RIVER COUNTY * - Basin 45 - ( , ) to 0.2 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.1 sq. 0.0 sq. 9.7 sq. 0.1 sq. 0.0 sq. 0.1 sq. 0.1 sq. 0.0 sq. AE HEC-1 / CHANOP HEC-1 / CHANOP Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 20

54 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 158 Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 65 INDIAN RIVER COUNTY * - Basin 47 - ( , ) to INDIAN RIVER COUNTY * - Basin 48 - ( , ) to INDIAN RIVER COUNTY * - Basin 49 - ( , ) to INDIAN RIVER COUNTY * - Basin 50 - ( , ) to INDIAN RIVER COUNTY * - Basin 50 - ( , ) to INDIAN RIVER COUNTY * - Basin 57 - ( , ) to INDIAN RIVER COUNTY * - Basin 60 - ( , ) to INDIAN RIVER COUNTY * - Basin 61 - ( , ) to INDIAN RIVER COUNTY * - Basin 62 - ( , ) to INDIAN RIVER COUNTY * - Basin 64 - ( , ) to INDIAN RIVER COUNTY * - Basin 64 - ( , ) to INDIAN RIVER COUNTY * - Basin 64 - ( , ) to INDIAN RIVER COUNTY * - Basin 65 - ( , ) to 0.0 sq. 0.0 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.2 sq. 0.3 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.0 sq. VE VE VE Joint Probability Joint Probability Joint Probability FEMA Storm Surge Model FEMA Storm Surge Model FEMA Storm Surge Model Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin Basin 21

55 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 171 Basin Basin Basin Basin 10 INDIAN RIVER COUNTY * - Basin 66 - ( , ) to INDIAN RIVER COUNTY * - Basin 67 - ( , ) to INDIAN RIVER COUNTY * - Basin 8 - ( , ) to SEBASTIAN, CITY OF - Basin 10 - ( , ) to 0.0 sq. 0.1 sq sq. 0.0 sq. AE HEC-1 / CHANOP HEC-1 / CHANOP Basin Basin Basin Basin 175 Basin 50 SEBASTIAN, CITY OF - Basin 50 - ( , ) to 0.0 sq. Basin 176 Basin Basin 55 SEBASTIAN, CITY OF - Basin 53 - ( , ) to SEBASTIAN, CITY OF - Basin 55 - ( , ) to 0.0 sq. 0.1 sq. Basin Basin 178 Basin 56 SEBASTIAN, CITY OF - Basin 56 - ( , ) to 0.0 sq. Basin 179 Basin 57 SEBASTIAN, CITY OF - Basin 57 - ( , ) to 0.0 sq. Basin 180 Basin 58 SEBASTIAN, CITY OF - Basin 58 - ( , ) to 0.1 sq. Basin 181 Basin 59 SEBASTIAN, CITY OF - Basin 59 - ( , ) to 0.0 sq. Basin 182 Basin 6 SEBASTIAN, CITY OF - Basin 6 - ( , ) to 0.0 sq. Basin 183 Basin 60 SEBASTIAN, CITY OF - Basin 60 - ( , ) to 0.0 sq. VE Joint Probability FEMA Storm Surge Model Basin 184 Basin 63 SEBASTIAN, CITY OF - Basin 63 - ( , ) to 0.0 sq. Basin 22

56 ID # Flooding Source Reach Limits Reach Length Detailed If Detailed, If Detailed, Analysis or Current Current Approximate Hydrologic Hydraulic Study Methodology Methodology Coastal. Riverine, or Basin 185 Basin 64 SEBASTIAN, CITY OF - Basin 64 - ( , ) to 0.0 sq. Basin 186 Basin 65 SEBASTIAN, CITY OF - Basin 65 - ( , ) to 0.0 sq. Basin 187 Basin 9 SEBASTIAN, CITY OF - Basin 9 - ( , ) to 0.0 sq. Basin Contained in Table 4A is the coastal flooding source to be studied as part of this project. Table 4A: Coastal Flooding Sources to be Studied Detailed Coastal Redelineation ID # Flooding Source Change to Reach Limits Change to Reach Length Stillwater Setup Wave Runup Wave Height Back of Dune Determination Erosion With Back of Dune Determination Without Back of Dune Determination 126 Atlantic Ocean INDIAN RIVER COUNTY * ( , ) to INDIAN RIVER COUNTY * ( , ) 22.3 Table 4B lists the riverine and lacustrine (or ponding) flooding sources to be studied as part of this project. Additional details of the data in Table 4B are provided in the WISE Scoping Module, summary Reach Report. The Scoping Map is included as Attachment J herein, illustrating the location and type of the various studies to be performed, as detailed in Table 4B. 23

57 Table 4B: Riverine Flooding Sources to be studied Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Blue Cypress Creek Blue Cypress Creek Collier Waterway Collier Waterway Elkcam Waterway Blue Cypress Creek ( , ) to Blue Cypress Creek ( , ) Blue Cypress Creek ( , ) to Blue Cypress Creek ( , ) Collier Waterway ( , ) to Collier Waterway ( , ) Collier Waterway ( , ) to Collier Waterway ( , ) Elkcam Waterway ( , ) to Elkcam Waterway ( , )

58 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 6 7 Elkcam Waterway Fort Drum Creek 8 Gum Slough 9 Indian River 10 Lateral G 11 Lateral H 12 Lateral J Elkcam Waterway ( , ) to Elkcam Waterway ( , ) Fort Drum Creek ( , ) to Fort Drum Creek ( , ) Gum Slough ( , ) to Gum Slough ( , ) Indian River ( , ) to Indian River ( , ) Lateral G ( , ) to Lateral G ( , ) Lateral H ( , ) to Lateral H ( , ) Lateral J ( , ) to Lateral J ( , )

59 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Main Relief Canal Main Relief Canal Main Relief Canal Main Relief Canal Main Relief Canal Main Relief Canal Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , ) Main Relief Canal ( , ) to Main Relief Canal ( , )

60 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Main Relief Canal North Relief Canal Padgett Branch Saint Sebastian Creek Schumann Waterway Main Relief Canal ( , ) to Main Relief Canal ( , ) North Relief Canal ( , ) to North Relief Canal ( , ) Padgett Branch ( , ) to Padgett Branch ( , ) Saint Sebastian Creek ( , ) to Saint Sebastian Creek ( , ) Schumann Waterway ( , ) to Schumann Waterway ( , )

61 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A South Prong Creek South Prong Creek South Prong Creek South Prong Creek South Prong Creek South Prong Creek South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , ) South Prong Creek ( , ) to South Prong Creek ( , )

62 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A South Prong Creek South Relief Canal South Prong Creek ( , ) to South Prong Creek ( , ) South Relief Canal ( , ) to South Relief Canal ( , ) 1 ( , ) to 1 ( , ) 10 ( , ) to 10 ( , ) 11 ( , ) to 11 ( , ) 12 ( , ) to 12 ( , ) 13 ( , ) to 13 ( , )

63 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 14 ( , ) 15 ( , ) to 15 ( , ) 16 ( , ) to 16 ( , ) 18 ( , ) to 18 ( , ) 2 ( , ) to 2 ( , ) 2 ( , ) to 2 ( , ) 20 ( , ) to 20 ( , ) 21 ( , ) to 21 ( , )

64 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 26 ( , ) 27 ( , ) to 27 ( , ) 27 ( , ) to 27 ( , ) 27 ( , ) to 27 ( , ) 28 ( , ) to 28 ( , ) 29 ( , ) to 29 ( , ) 3 ( , ) to 3 ( , ) 30 ( , ) to 30 ( , )

65 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 31 ( , ) 31 ( , ) to 31 ( , ) 31 ( , ) to 31 ( , ) 32 ( , ) to 32 ( , ) 33 ( , ) to 33 ( , ) 34 ( , ) to 34 ( , ) 35 ( , ) to 35 ( , ) 36 ( , ) to 36 ( , )

66 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 37 ( , ) 38 ( , ) to 38 ( , ) 39 ( , ) to 39 ( , ) 4 ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 4 ( , ) to 4 ( , ) 40 ( , ) to 40 ( , )

67 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 41 ( , ) 42 ( , ) to 42 ( , ) 43 ( , ) to 43 ( , ) 44 ( , ) to 44 ( , ) 45 ( , ) to 45 ( , ) 46 ( , ) to 46 ( , ) 47 ( , ) to 47 ( , ) 48 ( , ) to 48 ( , )

68 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 49 ( , ) 5 ( , ) to 5 ( , ) 50 ( , ) to 50 ( , ) 51 ( , ) to 51 ( , ) 52 ( , ) to 52 ( , ) 53 ( , ) to 53 ( , ) 54 ( , ) to 54 ( , ) 55 ( , ) to 55 ( , )

69 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 56 ( , ) 58 ( , ) to 58 ( , ) 59 ( , ) to 59 ( , ) 6 ( , ) to 6 ( , ) 62 ( , ) to 62 ( , ) 63 ( , ) to 63 ( , ) 63 ( , ) to 63 ( , ) 64 ( , ) to 64 ( , )

70 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 65 ( , ) 66 ( , ) to 66 ( , ) 67 ( , ) to 67 ( , ) 68 ( , ) to 68 ( , ) 69 ( , ) to 69 ( , ) 7 ( , ) to 7 ( , ) 70 ( , ) to 70 ( , ) 71 ( , ) to 71 ( , )

71 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A ( , ) to 72 ( , ) 73 ( , ) to 73 ( , ) 74 ( , ) to 74 ( , ) 75 ( , ) to 75 ( , ) 76 ( , ) to 76 ( , ) 77 ( , ) to 77 ( , ) 78 ( , ) to 78 ( , ) 79 ( , ) to 79 ( , )

72 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Unnamed 1 8 ( , ) to 8 ( , ) 80 ( , ) to 80 ( , ) 81 ( , ) to 81 ( , ) 82 ( , ) to 82 ( , ) 84 ( , ) to 84 ( , ) 9 ( , ) to 9 ( , ) Unnamed 1 ( , ) to Unnamed 1 ( , )

73 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Unnamed Tributary Unnamed Tributary Vero Lakes Channel A Vero Lakes Channel A Vero Lakes Channel A Vero Lakes Channel B Unnamed Tributary ( , ) to Unnamed Tributary ( , ) Unnamed Tributary ( , ) to Unnamed Tributary ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel A ( , ) to Vero Lakes Channel A ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , )

74 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A Vero Lakes Channel B Vero Lakes Channel B Vero Lakes Channel B Vero Lakes Channel B Vero Lakes Channel C 127 Basin 1 Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel B ( , ) to Vero Lakes Channel B ( , ) Vero Lakes Channel C ( , ) to Vero Lakes Channel C ( , ) INDIAN RIVER COUNTY * - Basin 1 - ( , ) sq. 41

75 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 128 Basin Basin Basin Basin Basin Basin Basin Basin 21 INDIAN RIVER COUNTY * - Basin 15 - ( , ) INDIAN RIVER COUNTY * - Basin 16 - ( , ) INDIAN RIVER COUNTY * - Basin 17 - ( , ) INDIAN RIVER COUNTY * - Basin 18 - ( , ) INDIAN RIVER COUNTY * - Basin 19 - ( , ) INDIAN RIVER COUNTY * - Basin 2 - ( , ) INDIAN RIVER COUNTY * - Basin 20 - ( , ) INDIAN RIVER COUNTY * - Basin 21 - ( , ) 7.1 sq. 0.6 sq. 0.0 sq. 0.0 sq. 0.1 sq. 1.3 sq. 0.1 sq. 0.0 sq. 42

76 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 136 Basin Basin Basin Basin Basin Basin Basin Basin 30 INDIAN RIVER COUNTY * - Basin 21 - ( , ) INDIAN RIVER COUNTY * - Basin 22 - ( , ) INDIAN RIVER COUNTY * - Basin 23 - ( , ) INDIAN RIVER COUNTY * - Basin 24 - ( , ) INDIAN RIVER COUNTY * - Basin 25 - ( , ) INDIAN RIVER COUNTY * - Basin 26 - ( , ) INDIAN RIVER COUNTY * - Basin 27 - ( , ) INDIAN RIVER COUNTY * - Basin 30 - ( , ) 0.0 sq. 0.0 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.2 sq. 0.5 sq. 43

77 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 144 Basin Basin Basin Basin Basin Basin Basin Basin 39 INDIAN RIVER COUNTY * - Basin 32 - ( , ) INDIAN RIVER COUNTY * - Basin 33 - ( , ) INDIAN RIVER COUNTY * - Basin 34 - ( , ) INDIAN RIVER COUNTY * - Basin 35 - ( , ) INDIAN RIVER COUNTY * - Basin 36 - ( , ) INDIAN RIVER COUNTY * - Basin 37 - ( , ) INDIAN RIVER COUNTY * - Basin 38 - ( , ) INDIAN RIVER COUNTY * - Basin 39 - ( , ) 0.0 sq. 0.2 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.1 sq. 0.0 sq. 44

78 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 152 Basin Basin Basin Basin Basin Basin Basin Basin 48 INDIAN RIVER COUNTY * - Basin 4 - ( , ) INDIAN RIVER COUNTY * - Basin 40 - ( , ) INDIAN RIVER COUNTY * - Basin 42 - ( , ) INDIAN RIVER COUNTY * - Basin 43 - ( , ) INDIAN RIVER COUNTY * - Basin 44 - ( , ) INDIAN RIVER COUNTY * - Basin 45 - ( , ) INDIAN RIVER COUNTY * - Basin 47 - ( , ) INDIAN RIVER COUNTY * - Basin 48 - ( , ) 9.7 sq. 0.1 sq. 0.0 sq. 0.1 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 45

79 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 160 Basin Basin Basin Basin Basin Basin Basin Basin 64 INDIAN RIVER COUNTY * - Basin 49 - ( , ) INDIAN RIVER COUNTY * - Basin 50 - ( , ) INDIAN RIVER COUNTY * - Basin 50 - ( , ) INDIAN RIVER COUNTY * - Basin 57 - ( , ) INDIAN RIVER COUNTY * - Basin 60 - ( , ) INDIAN RIVER COUNTY * - Basin 61 - ( , ) INDIAN RIVER COUNTY * - Basin 62 - ( , ) INDIAN RIVER COUNTY * - Basin 64 - ( , ) 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.2 sq. 0.3 sq. 0.0 sq. 46

80 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 168 Basin Basin Basin Basin Basin Basin Basin Basin 50 INDIAN RIVER COUNTY * - Basin 64 - ( , ) INDIAN RIVER COUNTY * - Basin 64 - ( , ) INDIAN RIVER COUNTY * - Basin 65 - ( , ) INDIAN RIVER COUNTY * - Basin 66 - ( , ) INDIAN RIVER COUNTY * - Basin 67 - ( , ) INDIAN RIVER COUNTY * - Basin 8 - ( , ) SEBASTIAN, CITY OF - Basin 10 - ( , ) SEBASTIAN, CITY OF - Basin 50 - ( , ) 0.0 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.1 sq sq. 0.0 sq. 0.0 sq. 47

81 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 176 Basin Basin Basin Basin Basin Basin Basin Basin Basin 63 SEBASTIAN, CITY OF - Basin 53 - ( , ) SEBASTIAN, CITY OF - Basin 55 - ( , ) SEBASTIAN, CITY OF - Basin 56 - ( , ) SEBASTIAN, CITY OF - Basin 57 - ( , ) SEBASTIAN, CITY OF - Basin 58 - ( , ) SEBASTIAN, CITY OF - Basin 59 - ( , ) SEBASTIAN, CITY OF - Basin 6 - ( , ) SEBASTIAN, CITY OF - Basin 60 - ( , ) SEBASTIAN, CITY OF - Basin 63 - ( , ) 0.0 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.1 sq. 0.0 sq. 0.0 sq. 0.0 sq. 0.0 sq. 48

82 Detailed ID # Flooding Source Change to Reach Limits Change to Reach Length Hydrology Hydraulics New Limited Detailed Study Redelineation of SFHAs Using Effective Data Refine/Establish Zone A 185 Basin Basin Basin 9 SEBASTIAN, CITY OF - Basin 64 - ( , ) SEBASTIAN, CITY OF - Basin 65 - ( , ) SEBASTIAN, CITY OF - Basin 9 - ( , ) 0.0 sq. 0.0 sq. 0.0 sq. Table 4C: Justification for New Detailed Studies ID # 23, 55-57, , , 174, 178, , Flooding Source Miles / Square Miles See Table 5B 5.3 / 0.3 Justification Detailed studies to be performed in areas of higher population and increased development pressure. Table 4D: Justification for Redelineation ID # 2-5, 9-20, 22, 24-31, 33-34, 37-39, 97, 108, , , , , 133, 152, , 173, 183 Flooding Source See Table 5B Miles / Square Miles / 30.7 Justification To meet DFIRM standards of FEMA s Multi- Hazard Flood Map Modernization Program 49

83 Table 4E: National Metrics Floodplain Boundary Standards (FPBS) Item Description Value New, Validated, or Updated Engineering (NVUE) Area Population Estimated number of stream that will meet FPBS for the new FIS. Estimated number of stream mileage and area that will meet NVUE requirements for the new FIS. Area in square being mapped with new FIS Population being mapped with new FIS (riverine) 2.8 sq. (basins) 540 sq 130,100 IV: Partner Contributions: Although not an official mapping partner, the communities of Indian River County provided an extensive amount of data relevant to the study, which is summarized below in Tables 5 and 6. Table 5: Partner Contributions Name of Partner Contribution Quantity Blue Book Unit Cost Blue Book Value of Contribution* Topographic Data 266 sq mi** $70 / sq mi # $18,620 Indian River County Communities Orthophotography (6-inch resolution) 266 sq mi** $25 / sq mi $6,650 Base Data 540 sq mi $51 / sq mi $27,540 Detailed Surveys 5.6 mi ## $2,920 / mi $16,352 St. Johns River Water Management District Orthophotography 540 sq mi $25 / sq mi $13,500 TOTAL $82,662 *Blue Book values based on FEMA publication Estimating the Value of Partner Contributions to Flood Mapping Projects, version 1.1, November 2006 **Approximately 147 square to be developed from original Florida DEM Project, with the remaining areas being developed through supplemental funds from Indian River County. # Total unit cost includes QC amount ## Includes both areas and linear detailed study scope. Area units converted to linear units based on a 1:1 conversion. Conversion based on a comparison of the total mileage of streams in Florida (60,044, based on the USGS 100K streams) versus the total area (56,610 sq mi). 50

84 The resulting 1.06:1 ratio was simplified to 1:1 for the purposes of this specific Scoping Report. Alternative methods to convert area units to linear units may be more appropriate for other applications. Table 6: GIS data layers available GIS data Acquisition Vertical Horizontal Use Source available Date Datum Datum Restrictions Cadastral Data N/A N\A N\A N\A N\A Hydrography Local Community 10/07 N\A N\A none Flood Hazard Information Federal 08/07 N\A N\A none County Boundary Local Data Community 10/07 N\A N\A none Municipal Local Boundary Community 10/07 N\A N\A none Digital Local Orthophoto Community 10/07 N\A N\A none Publicly Owned Lands Data N\A N\A N\A N\A N\A Transportation Local Data Community 10/07 N\A N\A none Elevation Data State/Local Yes ETJ Data N\A N\A N\A N\A N\A All of the terrain and imagery data listed above that is being supplied for this flood insurance study by Indian River County and the State of Florida. The contractor awaits information from local officials that will be entered into the NDEP and NDOP project tracking websites. The contractor will forward NDEP and NDOP summary reports on the terrain and imagery data to FEMA when complete. The contractor expects delivery of the data in late summer Additional information regarding this delivery is detailed in the following section. V: Project Status: A key factor in the schedule for completion of the Indian River County FIS is the delivery of the Lidar data by a 3 rd party consultant. The communities of Indian River County have stressed their support of the use of this Lidar data in the floodplain mapping, especially in light of the following: The alternative source of topographic data, which is the significantly older 5-ft interval contours from USGS 7.5-minute Quadrangles. In areas of flat terrain, especially in coastal communities like Indian River County, 5-ft interval contours tend to be inadequate for accurate floodplain delineations. 51

85 As a pro-active measure to prepare for the pending FIS, Indian River County funded additional Lidar collection and processing (approximately 119 square ) from the Florida DEM contractors. Attempts have been and will continue to be made to expedite the delivery of the Lidar products, however, in considering the latest estimated delivery date, which is late summer 2008, the current project schedule projects Preliminary DFIRMs to be completed June 15, 2009, and Post-Preliminary Processing to be completed June 15, The elements of the FIS that can be performed without this terrain data, and areas not covered by this data, will initiated first. Monthly project status updates will be performed on the MIP. If unexpected issues surface which affect the schedule, a more comprehensive status report and/or conference call will be initiated to ensure the Region s awareness and understanding of the issue and the proposed solutions. VI. Project Funding Project funding information is detailed on the MIP Supplemental Funding Spreadsheet for Indian River County, Florida, located in Appendix D. VII. Summary The current flood hazard area for Indian River County includes approximately of detailed riverine study, 22.3 of detailed coastal study, 30.7 square of detailed lacustrine or shallow ponding studies, of approximate riverine flooding, and 2.8 square of approximate lacustrine or shallow ponding areas. The map modernization initiative for Indian River County will include approximately 5.3 of detailed study along effective Zone A streams; 0.3 square of detailed study along effective Zone A basins; of redelineation of effective Zone AE reaches; 30.7 square of redelineation of effective Zone AE basins; 22.3 of coastal redelineation; and and 2.5 square of Zone A refinement. This mapping to be performed is summarized in Table 7. 52

86 Table 7: Total Study Mileage by Type of Study Study Type Detailed Approximate Redelineation Totals Effective Flood Insurance Study Riverine () Coastal () Basins (sq. ) New Studies to be Performed Riverine () Coastal () Basins (sq. )

87 ATTACHMENT A

88

89

90

91

92

93

94 ATTACHMENT B

95

96

97

98

99

100 ATTACHMENT C

101

102

103

104

105

106 ATTACHMENT D

107 #REF! Baseline Revised: PROJECT DESCRIPTION: (i.e. County, State, Contract No., Task Order No) Indian River Co, FL, EMA-2002-CO-0011A, Task Order #017 Performance Period: Start: 5/8/2006 Finish: 9/30/2010 Activity Projected Start Date Projected Completion Date Budget Percent Complete to Date Amount Spent to Date Actual Completion Date (mm/dd/year) (mm/dd/year) $ % $ (mm/dd/year) Scoping 6/4/2007 3/1/2008 $23,345 25% $5,836 Perform Field Survey 3/15/2008 5/31/2008 $42,673 0% $0 Topographic Data Development 6/4/2007 9/15/2008 $18,457 0% $0 Independent QA/QC of Topographic Data N/ N/ Base Map Acquisition and Preparation 8/1/2007 5/31/2008 $5,000 0% $0 Perform Hydrologic Analyses 3/15/ /30/2008 $14,661 0% $0 Independent QA/QC of Hydrologic Analyses 12/1/ /31/2008 $3,865 0% $0 Perform Coastal Hazard Analyses N/ N/ Independent QA/QC of Coastal Hazard Analyses N/ N/ Perform Hydraulic Analyses 3/15/ /30/2008 $44,718 0% $0 Independent QA/QC of Hydraulic Analyses 12/1/ /31/2008 $5,000 0% $0 Floodplain Mapping (Detailed Riverine and {Redelineation Using Effective Profiles on new topography, Redelineation (digitization) w/out new topography}, Zone A, merging revised and unrevised data) 4/1/2008 4/30/2009 $117,123 0% $0 Independent QA/QC of Floodplain Mapping 2/16/2009 5/31/2009 $14,000 0% $0 Perform Redelineation (Redelineation Using Effective Profiles on new topography, Redelineation (digitization) w/out new topography) N/ N/ Independent QA/QC of Redelineation N/ N/ Develop DFIRM Dbase (including graphic specifications) 3/16/2009 4/30/2009 $10,301 0% $0 Independent QA/QC of DFIRM Dbase and Graphics $0 0% $0 Produce Preliminary Map Products (finalize preliminary SOMA, FIS, preliminary maps, prepare transmittal letters, complete delivery of preliminary maps) 6/1/2009 6/15/2009 $23, % $0 Post-Preliminary Processing 6/16/2009 6/15/2010 $52,980 0% $0 Total $375,282 2% $5,836 Reporting Costs: Please distribute this cost throughout the funded tasks, with the exception of Independent Outreach Costs: Split Outreach Costs Equally Between Produce Preliminary Map Products and Post-Preliminary Processing; or indicate alternate distribution

108 ATTACHMENT E

109 NOTES TO USERS This map is for use in administering the National Flood Insurance Program. It does not necessarily identify all areas subject to flooding, particularly from local drainage sources of small size. The community map repository should be consulted for possible updated or additional flood hazard information. To obtain more detailed information in areas where Base Flood Elevations (BFEs) and/or floodways have been determined, users are encouraged to consult the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained within the Flood Insurance Study (FIS) report that accompanies this FIRM. Users should be aware that BFEs shown on the FIRM represent rounded whole-foot elevations. These BFEs are intended for flood insurance rating purposes only and should not be used as the sole source of flood elevation information. Accordingly, flood elevation data presented in the FIS report should be utilized in conjunction with the FIRM for purposes of construction and/or floodplain management. LEGEND SPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT INUNDATION BY THE 1% ANNUAL CHANCE FLOOD EVENT FT 81 26'15" FT FT FT 81 22'30" 28 52'30" 28 52'30" 94000mN Base Flood Elevations determined. ZONE AE Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood Elevations determined FT Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average depths determined. For areas of alluvial fan flooding, velocities also determined. ZONE AO Special Flood Hazard Area formerly protected from the 1% annual chance flood event by a flood control system that was subsequently decertified. Zone AR indicates that the former flood control system is being restored to provide protection from the 1% annual chance or greater flood. ZONE AR Boundaries of the floodways were computed at cross sections and interpolated between cross sections. The floodways were based on hydraulic considerations with regard to requirements of the National Flood Insurance Program. Floodway widths and other pertinent floodway data are provided in the Flood Insurance Study report for this jurisdiction. PROFILE BASE LINE ZONE A99 Areas to be protected from 1% annual chance flood event by a Federal flood protection system under construction; no Base Flood Elevations determined. ZONE V Coastal flood zone with velocity hazard (wave action); no Base Flood Elevations determined. ZONE VE Coastal flood zone with velocity hazard (wave action); Base Flood Elevations determined. FLOODWAY AREAS IN ZONE AE Certain areas not in Special Flood Hazard Areas may be protected by flood control structures. Refer to Section 2.4 "Flood Protection Measures" of the Flood Insurance Study report for information on flood control structures for this jurisdiction mN The projection used in the preparation of this map was State Plane Florida East FIPS Zone The horizontal datum was NAD83, GRS1980 spheroid. Differences in datum, spheroid, projection or UTM zones used in the production of FIRMs for adjacent jurisdictions may result in slight positional differences in map features across jurisdiction boundaries. These differences do not affect the accuracy of this FIRM. The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of encroachment so that the 1% annual chance flood can be carried without substantial increases in flood heights. OTHER FLOOD AREAS Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood. ZONE OTHER AREAS Areas determined to be outside the 0.2% annual chance floodplain. ZONE FT Areas in which flood hazards are undetermined, but possible. ZONE D COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS Spatial Reference System Division National Geodetic Survey, NOAA Silver Spring Metro Center 1315 East-West Highway Silver Spring, Maryland (301) OTHERWISE PROTECTED AREAS (OPAs) 8 31 To obtain current elevation, description, and/or location information for bench marks shown on this map, please contact the Information Services Branch of the National Geodetic Survey at (301) or visit its website at mN CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas. 1% annual chance floodplain boundary 0.2% annual chance floodplain boundary Floodway boundary Zone D boundary ZONE AE Base map information shown on this FIRM was provided in digital format by Seminole County, Florida. This information was photogrammetrically compiled at a scale of 1:12000 from aerial photography dated March CO This map reflects more detailed and up-to-date stream channel configurations than those shown on the previous FIRM for this jurisdiction. The floodplains and floodways that were transferred from the previous FIRM may have been adjusted to conform to these new stream channel configurations. As a result, the Flood Profiles and Floodway Data tables in the Flood Insurance Study report (which contains authoritative hydraulic data) may reflect stream channel distances that differ from what is shown on this map. K LA FLOOD HAZARD INFORMATION IS NOT SHOWN ON THIS MAP IN AREAS OUTSIDE OF SEMINOLE COUNTY M O IN CBRS and OPA boundary Boundary dividing Special Flood Hazard Area Zones and boundary dividing Special Flood Hazard Areas of different Base Flood Elevations, flood depths or flood velocities. Y CO E SE 8 T UN UN TY Base Flood Elevation line and value; elevation in feet* 513 Base Flood Elevation value where uniform within zone; elevation in feet* * Referenced to the North American Vertical Datum of 1988 (NAVD 88) LE (EL 987) ZONE Corporate limits shown on this map are based on the best data available at the time of publication. Because changes due to annexations or de-annexations may have occurred after this map was published, map users should contact appropriate community officials to verify current corporate limit locations. A A Cross section line Transect line Geographic coordinates referenced to the North American Datum of 1983 (NAD 83), Western Hemisphere 97 07'30", 32 22'30" mN LOWER WEKIVA RIVER PRESERVE STATE PARK ZONE AE If you have questions about this map or questions concerning the National Flood Insurance Program in general, please call FEMA MAP ( ) or visit the FEMA website at foot grid values: Florida State Plane coordinate system, East Zone (FIPSZONE = 901), Transverse Mercator projection FT Bench mark (see explanation in Notes to Users section of this FIRM panel) MAP REPOSITORIES Refer to Map Repositories list on Map Index EFFECTIVE DATE OF COUNTYWIDE FLOOD INSURANCE RATE MAP APRIL 17, 1995 EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL SEPTEMBER 28, to update corporate limits, to change Base Flood Elevations and Special Flood Hazard Areas, to add Base Flood Elevations and Special Flood Hazard Areas, to delete Special Flood Hazard Areas, to change zone designations, to update map format, to update roads and road names, to incorporate previously issued Letters of Map Revision, and to reflect updated topographic information. AR Y Wekiva River OU ND ZONE A River Mile M1.5 JOINS PANEL 0055 Contact the FEMA Map Service Center at for information on available products associated with this FIRM. Available products may include previously issued Letters of Map Change, a Flood Insurance Study report, and/or digital versions of this map. The FEMA Map Service Center may also be reached by Fax at and its website at meter Universal Transverse Mercator grid ticks, zone mE D5510 ZONE FT PA R KB 8 ZONE mN For community map revision history prior to countywide mapping, refer to the Community Map History table located in the Flood Insurance Study report for this jurisdiction. To determine if flood insurance is available in this community, contact your insurance agent or call the National Flood Insurance Program at MAP SCALE 1" = 1000' 500 WEKIVA HAVEN TRL Seminole County Unincorporated Areas , , ,000 FEET METERS FT PANEL 0035F ZONE ZONE KATIE'S LANDING mN 9 SEMINOLE COUNTY, FLORIDA RD RY LOWER WEKIVA RIVER PRESERVE STATE PARK KE LA DR AND INCORPORATED AREAS K KE E PA R YA N IVA W EK PA R K BO UN DA PROFILE BASE LINE ZONE PANEL 35 OF (SEE MAP INDE FOR FIRM PANEL LAYOUT) 23 CONTAINS: PARK BOUNDARY COMMUNITY NUMBER PANEL SUFFI F E LN SEMINOLE COUNTY VIL L Seminole County Unincorporated Areas MICHELLE LN ZONE A mN SUMMER ZONE ZONE AE FIRM FLOOD INSURANCE RATE MAP WILDLIFE LN FT ZONE A ZONE Miranda Lake NOVA DR Yankee Lake 21 P AK '45" 81 26'15" 4 000m 58 E 4 000m 59 E OAKS CIR 10 MALEKEAN TRL 28 OSPREY HAMMOCK TRL LONGWOOD MARKHAM RD S ES PR CT Y C W O L L HO EMERALD FOREST CT 27 PAINTED POST PT RI V E R Wekiva River 46 R LA O S S KE LN Please refer to the separately printed Map Index for an overview map of the county showing the layout of map panels; community map repository addresses; and a Listing of Communities table containing National Flood Insurance Program dates for each community as well as a listing of the panels on which each community is located. No Base Flood Elevations determined. ZONE AH Coastal Base Flood Elevations shown on this map apply only landward of 0.0' North American Vertical Datum of 1988 (NAVD 88). Users of this FIRM should be aware that coastal flood elevations are also provided in the Summary of Stillwater Elevations table in the Flood Insurance Study report for this jurisdiction. Elevations shown in the Summary of Stillwater Elevations table should be used for construction and/or floodplain management purposes when they are higher than the elevations shown on this FIRM. Flood elevations on this map are referenced to the North American Vertical Datum of These flood elevations must be compared to structure and ground elevations referenced to the same vertical datum. For information regarding conversion between the National Geodetic Vertical Datum of 1929 and the North American Vertical Datum of 1988, visit the National Geodetic Survey website at or contact the National Geodetic Survey at the following address: The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that has a 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is the area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surface elevation of the 1% annual chance flood. ZONE A 31 TO 000m 60 E FEATHER LN 24 Notice to User: The Map Number shown below should be used when placing map orders; the Community Number shown above should be used on insurance applications for the subject community. AI ZONE A LAKE MARKHAM RD MAP NUMBER 12117C0035F 25 GLADE RD ZONE A 28 48'45" JOINS PANEL ZONE A MAUREEN DR mE mE mE 81 22'30" MAP REVISED SEPTEMBER 28, 2007 Federal Emergency Management Agency

110 ATTACHMENT F

111 Vicinity Map State of Florida NATIONAL FLOOD INSURANCE PROGRAM COUNTYWIDE FLOOD INSURANCE STUDY INDIAN RIVER COUNTY, FLORIDA AND INCORPORATED AREAS SCOPING REPORT PANEL SCHEMA SUBMISSION BY: WATERSHED CONCEPTS DATE: JANUARY 28, 2007 Legend 0125 Proposed Panel s Major Roads Roads N Federal Emergency Management Agency Community Boundaries 0 7,000 14,000 28,000 Feet

112 ATTACHMENT G

113 Indian River County Vertical Datum Shift Control SR A1A BREVARD COUNTY OSCEOLA COUNTY 1 60 INDIAN RIVER COUNTY 95 SR SR A1A OKEECHOBEE COUNTY Legend Control Points Roads County Boundaries 0 12,500 25,000 Feet STLUCIE COUNTY

114 08/01/2007 County Quad Quad Latitude Longitude Conversion Statistical Factors If Max Var. <= 0.25 ft Name Name Corner to NAVD 88 Then test Passes Indian River Kenansville SE SW Because the Average Conversion Factor is greater than Indian River Kenansville SE SE ', there will be an active conversion of unrevised Indian River Fellsmere SW flood elevations on the FIRM or flood profile. Indian River Fellsmere SE Additionally, the Average Conversion Factor, below, Indian River North of Gum Slough SW shall be applied to all data tables in the FIS report Indian River North of Gum Slough SE containing flood elevations referenced to NGVD 29. Indian River Vero Beach SW Indian River Vero Beach SE Indian River Fort Drum NE SW Indian River Vero Beach NE Indian River Fellsmere NE Number of Points Used: 11 Maximum Conversion Factor: Minimum Conversion Factor: Maximum Variance from Average: 0.14 Pass Use Average Conversion Factor: ft.

115 ATTACHMENT H

116

117 ATTACHMENT I

118 Indian River County Levee Locations Sebastian Orchid Fellsmere 1 Indian River Shores A1A 60 INDIAN RIVER COUNTY Vero Beach Legend Levees Roads Community Boundaries Indian River County 0 12,500 25,000 Feet

119 ATTACHMENT J

120 Vicinity Map State of Florida Fellsmere South Prong Creek Vero Lakes Channel A Sebastian Collier Waterway Schumann Waterway Indian River Lateral G Orchid North Relief Canal Indian River Shores 76 Padgett Branch 81 Indian River County 2 Main Relief Canal Vero Beach 84 3 South Relief Canal 32 Lateral J 34 NATIONAL FLOOD INSURANCE PROGRAM COUNTYWIDE FLOOD INSURANCE STUDY INDIAN RIVER COUNTY, FLORIDA AND INCORPORATED AREAS SCOPING REPORT Legend Detailed Study Redelineation Use of Effective Information Detailed Study Redelineation Use of Effective Information s Major Roads Roads Community Boundaries N 0 8,000 16,000 32,000 Feet SUBMISSION BY: WATERSHED CONCEPTS DATE: FEBRUARY 13, 2008 Federal Emergency Management Agency