Hydrographic and Sediment Surveying

Transcription

1 Hydrographic and Sediment Surveying Hydrographic Surveying Invasive Vegetation Mapping Sediment Surveying Land Mapping Sub-Bottom Profiling Bio-Volume Vegetation Mapping Side Scanning Sonar Data Collection SonarWiz, Hypack and Dredgepack Data Lake Bottom Hardness Analysis Profile (Thalweg) Survey Capacity Curve Analysis GIS Processing and Analysis Sediment Quantity Analysis USACOE and IHO Compliant Hydrographic Surveying is what we do every day A nationwide network of Lake Professionals Over 20 years of experience State of the art equipment to get the job done right USACOE and IHO compliant

2 The Mapping Network, LLC is a business organized to perform Hydrographic and Sub-bottom profile surveys on lake and river systems for a wide range of clients throughout the United States. We operate from our office in Omaha, Nebraska along with fifteen highly trained Lake Management companies located around the country. We provide this service for a variety of client needs including generating bathymetry, sediment, and water volume information. The Mapping Network works directly with government organizations, lake associations, engineers, developers and dredging companies. Our company and personnel have been leaders in the development of tools and technology for hydrographic survey systems for over a decade. Since 1999, the staff at The Mapping Network began linking hydro-acoustic depth measuring equipment with Differential and RTK GPS receivers to create accurate and up to date bathymetry maps. Over the ensuing years, this technology has improved and our company has remained on the cutting edge of utilizing these systems to produce very accurate and cost effective bathymetry and sediment surveys. Top Left: Shallow water manual bathymetry and sediment measurements Top Right: Hydrographic surveying using Hypack software Bottom: One of the survey vessel setups with subbottom profiling equipment for measuring sediment

3 Survey Equipment z Top: Survey vessel Middle: Sub-Bottom profile survey at dusk Bottom Right: Hydrographic survey using Hypack Below: 210 KHz and 10 KHz Transducer Mount

4 Hydrographic Surveying Top: Contour map depicting one-foot elevation changes Bottom: Three-dimensional model of lake bottom Below: Contour map overlaid on a transparent threedimensional model

5 Sediment Surveying Top: Sediment Survey example - notice area in the southern portion of the lake that has been dredged. Bottom: This example is a zoomed view of the southern portion of lake notice the sedimentation that occurred when the house was built. Below: View of raw sonar data from 10 KHz transducer subbottom sediment profiling system.

6 Excavation Analysis Top: Excavation map example showing existing contours, proposed contours and removal depth and quantity calculations. Middle: This example is a dredge monitoring project. The color coded area is where dredging was performed. The red outlined portions are an estimate of how much sediment is yet to be removed. Bottom Right: The Excavation map below shows the area to be excavated that are less than 4 feet and how much sediment needs to be removed. Below: Sediment Map example showing probe locations and sediment thickness. Bot

7 Vegetation Mapping Top: Vegetation survey showing a side profile view, vegetation height scatter plot, and transect line overview. Bottom: Vegetation survey identifying invasive plants. Below: Rasterized vegetation map for percent bio-volume point data.

8 Sediment Profile Top: A 1983 and 2013 comparison sediment profile. Below: Sonar display of a soft sediment layer.

9 Additional Services Top: This image depicts a lake bottom hardness analysis. The blue areas are soft sediment and the yellow displays a hard bottom. Middle: After viewing the lake bottom hardness map further investigation by side-scanning sonar revealed a pile of rocks and tires. Bottom Right: Capacity curve example depicting gallons of water per foot of elevation. Below: Example of Downscan technology using sidescanning equipment.

10 Recent : Kansas River Douglas County, Kansas Lake Wildwood Marshall County, Illinois Vaughn Lake Cumberland County, Virginia Dodge Park Marina Douglas County, Nebraska Lake Calumet Harbor Cook County, Illinois Smith Mountain Lake Franklin County, Virginia Brays Island Lake Beaufort County, South Carolina Lake Windsor Bella Vista Village, Arkansas Armstrong Pond Spring Brook Country Club, New Jersey Riverbrooke Lake Atlanta, Georgia Twin Lakes Cook County, Illinois Cedar Lake Madison County, Iowa Carbon Canyon Orange County, California Hydrographic survey for engineering water intake and dredging. Client was The Army Corps of Engineers survey for dredging. Client was Lake Wildwood HOA. survey and incremental volume calculations. Client was an engineering firm. survey, dredging analysis. Client was local engineering firm and The Army Corps of Engineers. Hydrographic survey and volume analysis for dredging. Client was The Army Corps of Engineers. Hydrographic survey and volume analysis. Client was an engineer and government agency. Hydrographic survey before and after dredging, sediment survey. Client was a property owners association. survey, excavation maps, postdredging mapping. Client was a property owners association. Hydrographic survey before and after dredging, sediment survey, water volume analysis before and after dredging. Client was a private golf club. survey, excavation maps, postdredging mapping. Client was a Home Owners Association. survey, excavation maps for engineering firm and dredging company. survey, and excavation maps for engineering firm. survey, and excavation maps for the Orange Country Parks