Georgia Flood M.A.P. Program. FEMA Flood Risk Productions in Action

Transcription

1 Georgia Flood M.A.P. Program FEMA Flood Risk Productions in Action Georgia Association of Floodplain Management March 12 th, 2013

2 Agenda Georgia Flood M.A.P. Risk MAP Project Status GA Risk MAP Community Resiliency Program Implementing Community Resiliency for the UCRB Project What are the FEMA Flood Risk Products & Datasets Applications of Flood Risk Products to identify Areas of Mitigation Interest 2

3 GA FLOOD M.A.P. PROJECT STATUS

4 4 GA Risk M.A.P. Program Status Upper & Middle Chattahoochee Watersheds FY2009 Cobb, Coweta, DeKalb, Douglas, Forsyth, Fulton, & Gwinnett Counties Georgia Coastal Project FY2010 Bryan, Camden, Charlton, Chatham, Effingham, Glynn, Liberty, Long, & McIntosh Counties Newton County, GA FY2010 Discovery Projects FY2010 Middle Chattahoochee - Lake Harding, Upper Ocmulgee, Middle Savannah, & Upper Savannah Watersheds Middle Chattahoochee Lake Harding & Upper Ocmulgee Risk MAP Projects FY2011

5 GA FLOOD M.A.P. COMMUNITY RESILIENCY PROGRAM

6 Community Resiliency Program Objectives Develop flood risk products and flood hazard maps that are based on the best available data from the community and latest technologies Strengthen Federal, State, Local, & Regional Partnerships Provide data that will enhance Local Hazard Mitigation Plans Help communities make informed decisions about development, ordinances, and flood mitigation projects Increase flood risk awareness Identify other programs or processes that can be leveraged to assist communities with mitigation planning & taking action Create safer communities by reducing loss of life & property Enable individuals to recover more rapidly from floods & other disasters Lessen the financial impact on the Treasury, States, Tribes & communities 6

7 Partnerships Risk MAP Program FEMA Region IV Georgia Flood M.A.P. Program Georgia DNR Risk Analysis Hazard Mitigation Assistance Floodplain Management & Insurance Floodplain Management Georgia Emergency Management Agency Local Governments 7

8 8 Mitigation Happens at Local Level GA Flood M.A.P. Products in Local Plans and Programs Emergency Management Emergency Operations Plan, Evacuation Plans, Public Safety Education Planning/Development GIS and Mapping Floodplain Management Public Works/Finance Local Officials Comprehensive Plans, Growth Management, Subdivision Regulations, Building Code, Zoning Online Map Layers, Local Vulnerability Analysis Ordinance Enforcement, Flood Insurance Outreach to Citizens and Businesses, CRS Stormwater Management, Capital Improvements Plan Economic Development Plan, Sustainability Plans, Policies

9 Resilience Meetings How do we deliver a flood risk and resource management strategy that will make a difference in human behavior? Given accurate & understandable information about flood risk, people will choose to do the right thing. True or False? 9

10 Resilience to Action Key Take Aways 1. Increase the Value of Risk Maps via Ownership 2. Data to Convey What Is Their Flood Risk 3. Define Actions to Drive Sustainability 10

11 A Key Challenge: Overcome Denial The risk stops at a line on a flood map. If my home does flood, it s no big deal, the government will absolve my loss. I m already covered -- my homeowners policy covers flood. 11

12 Risk Communications Plan Why are we communicating? Who is our audience? What does our audiences want to know? What do we want to get across? How will we communicate? How will we listen? How will we respond? 12

13 FOCUS PROVIDED INFORMATION ON ACTIONS The Most Effective Thing to Say to Motivate People to Prepare is: o o WHAT THEY SHOULD DO TO PREPARE And where to find more about HOW to do it 13

14 EXPLAIN CONSEQUENCE REDUCTION Tell Them How the Actions Being Recommended Reduce Losses: o People are more likely to take actions if information explains how those actions can cut their losses if something happens 14

15 POSITION AWARENESS FOR PEOPLE TO SEE Get Public Preparedness & Mitigation Out of the Closet and in the Streets: o o People are more likely to take actions they see others doing Monkey see, monkey do will occur 15

16 TARGET TALKING Encourage People to Talk about Preparing & Mitigating with Others: People are more likely to do something if they think doing it is their own idea: Comes from talking about it with others BREAKOUT SESSION Use innovative ways to get people talking about preparedness actions with others 16

17 Next Steps -Talking &Taking Actions Flooding is a predictable risk; a manageable risk. RISK MAPS are moving from portraying flood hazard rate zones to Communication Assessing, and then Mitigating those identified RISK! 17

18 IMPLEMENTING RESILIENCY FOR THE UCRB PROJECT

19 Fiscal Year 2009 Project Population 4 million Upper Chattahoochee River Basin Project (UCRB) Historic flooding event September 2009 Watershed-Based, Full Risk MAP Implementation Updated H&H model for 107 miles of Chattahoochee River Extensive survey Calibrate models using HWM results from recent flooding events Forsyth, Gwinnett, DeKalb, Cobb, Fulton, Douglas, & Coweta Counties New/Updated Detailed studies for high priority subbasins Incorporated local leverage studies Utilized high-accuracy elevation data Countywide and Physical Map Revisions (PMR) 19

20 Why Develop Risk MAP Products for UCRB Project initiation soon after major flooding disaster Misunderstanding of flood risk throughout project area Mixed messages & inaccurate reporting from media Highly accurate, quality H&H models & LiDAR Most populated area in the State Sophisticated communities that could utilize & apply the data 20

21 Flood Risk Datasets Required Datasets Standard Deliverables Enhanced Deliverables Changes Since Last FIRM (CSLF) Horizontal Changes in Flood Hazard Areas Affected structures and/or population Depth & Probability Grids 10%, 4%, 2%, 1%, 0.2% annual chance flood frequencies Percent Annual Chance Grid Percent Chance over 30 yrs Water surface elevation grids (multifrequency) 20% Annual Chance Flood Frequency Unrevised flooding sources Freeboard (as needed) Water Surface Elevation Change Grid (1%) Velocity Grids Hazus Loss Estimates Level 1 Analysis Average Annualized Loss Estimates (2010) Level 2 Analysis Unrevised flooding sources Areas of Mitigation Interest (AoMI) Levees, dams, other flood control strucutres Stream flow contrictions Past Claims Hotspots Key Emergency Rtes overtopped At Risk Critical Facilities Areas of significant erosion Significant Landuse Changes Ranking infrastructure, critical facilities, homes, or parcels based on frequency and/or depth of flooding Identification of mitigation strategies & potential actions Identification of properties at risk to dam inundation Ranking repetitive loss properties based on frequency of flooding Identification of technical & funding resources

22 Risk Communication & Outreach 22

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25 Flood Risk Review & Resilience Meetings First meetings conducted in Region IV Coweta, Cobb, Gwinnett, Douglas Coming: Forsyth, DeKalb, Fulton Partnered with GEMA Mitigation Plan Updates Hazard Mitigation Grant Programs & Funding Sources Local Mitigation Projects Technical Assistance Topics Flood Risk Products Mitigation Strategies How to use data to identify mitigation actions Interactive group activities 25

26 Meeting Stakeholders County & City Officials FPA, EMA, Planning & Zoning, GIS, Code Enforcement, Building Department, Public Works, Roads State Agencies GA DNR, GA Safe Dams, GADOT, GA DCA, ARC Federal Agencies FEMA,USACE, USGS, NOAA, NRCS 26

27 Strategies to Reduce Flood Risk Prevention Affects future development Includes ordinances and building codes Structural projects Involves construction Includes berms Includes altering stream routes Property protection Affects existing development Includes elevation and acquisition Public education and awareness Informs people about risk Includes outreach activities Natural resource protection Protects water quality Protects Habitats Restores resources Emergency services protection Protects critical facilities 27

28 Meeting Tools 28

29 Meeting Tools

30 Meeting Tools

31 Other Materials 31

32 Participant Feedback Provide Flood Risk Products ahead of meetings Conduct technical training on Flood Risk Products Individual community discussions on high risk areas 32

33 Results Can assist my community to better understand it s flood risk 30% 40% 30% 3-Neutral 4-Agree 5-Strongly Agree Have an increased understanding of the resources available to help implement mitigation strategies 50% 10% 40% 3-Neutral 4-Agree 5-Strongly Agree Understand the importance of communicating flood risk to constituents 40% 20% 40% 3-Neutral 4-Agree 5-Strongly Agree 33

34 Next Steps Track & advance mitigation action Continue to strengthen alignment with other Federal & State Programs Seek out possible training opportunities Investigating different platforms to serve flood risk data 34

35 FLOOD RISK PRODUCTS & DATASETS

36 What are Flood Risk Products? Flood Risk Product are the Non- Regulatory products that FEMA now develops Main use in understanding complete Flood Risk Picture for community area 36

37 Risk MAP Flood Study Products Regulatory Flood Insurance Products Non-Regulatory Flood Risk Products DFIRM Database Subject to statutory dueprocess requirements Not subject to statutory dueprocess requirements 37

38 FloodRisk Products Changes Since Last FIRM (CSLF) Flood Depth Grids AoMI Hazus Analysis Results Flood Risk GeoDatabase Flood Risk Report Flood Risk Map 38

39 Changes Since Last FIRM Spatial comparison between the effective data and the updated study flooding 39

40 Flood Depth Grids Help give contextual context to the flood depth at a certain location 40

41 Area of Mitigation Interest Location of a possible flood risk. Examples: Critical Facilities, Schools, Overtopped roads, Flood Losses 41

42 Hazus Analysis Able to see potential losses at the census block level Lots of support data 42

43 FloodRisk GeoDatabase This includes all of the FloodRisk Data 43

44 FloodRisk GeoDatabase Has many data relationships built into it for easier searching 44

45 A summary of the Flood Risk for the project area, for example the Upper Chattahoochee River Basin or a specific community, i.e. Douglas County Flood Study FloodRisk Report 45

46 FloodRisk Map Overview of the FloodRisk products to give the community a overall snap shot of it s Flood Risk. 46

47 How to Use FloodRisk Products Can intersect road crossing with flood depths Identify areas of greatest flood risk change Show community population flood risk easily 47

48 APPLICATIONS OF FLOOD RISK PRODUCTS TO IDENTIFY AOMI

49 49 What are Areas of Mitigation Interest?

50 How to Determine AoMI Risk MAP products & datasets Community Provided Data Mining of existing mitigation plans & actions underway Floodplain Management Ordinances Engineering Data Engineering data from other reports (e.g. USACE, DOT) Other Government Agency Data Claims data (inc. RL, SRL, LOMCs, etc) Flood control structures (Dams/Levees) Critical Facilities Mitigated Properties & Losses Avoided Flood Insurance Policy Information Areas of Mitigation Action 50

51 Demonstrations

52 52 Contacts GA DNR Floodplain Management Tom Shillock, CFM Project Manager Shannon Brewer, CFM George Thompson, CFM Jason Brown, CFM