ECORP Assists Placer County to Develop a Tool to Use Lidar Data to Automatically Detect Wetlands and Other Waters of the U.S.

Lidar Only 1High-density topographic mapping data collected by lidar sensors are rapidly becoming available for use in projects. For example, in the California Central Valley local governments and state agencies have access to a valley-wide comprehensive data set developed for the Central Valley Flood Evaluation and Delineation (CVFED) Program. The availability of lidar data brings opportunity for development of large-scale environmental resource datasets and interpretation tools that can be used by local planning authorities.
Recently, ECORP collaborated with Placer County Community Development Resource Agency to develop a lidar-based tool to automatically detect areas likely to support wetlands and waters of the U.S. This tool is being used to develop a regional Depressional Landscape Wetland Index (DLWI) for use in implementation of the Placer County Conservation Program (PCCP). The DLWI will be used by PCCP biologists as the baseline condition for lands in the program and to evaluate changes to the landscape during the permit term.
To develop the DLWI, ECORP processed CVFED lidar data into a raster-gridded Digital Elevation Model (DEM). ECORP then developed a GIS-based process model that automatically identifies enclosed topographic areas and likely flow paths for surface water. The topographic enclosures and linear wetland flow paths were modeled using automation tools developed by ECORP to assist in remote sensing of wetlands and wetland habitats using lidar data inputs. These tools successfully mapped wetlands and waters over the entire 212,000-acre program area and will allow staff at Placer County, the City of Lincoln, and the PCCP to conduct baseline consistency determinations under the PCCP.
Lidar Only 2
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The PCCP Depressional Landscape Wetland Index is one example of a tool and dataset that can be derived from lidar data and GIS models and used by a local planning authority. ECORP is continuing to develop creative solutions for large-scale environmental data collection and interpretation using lidar data and Geographic Information Systems (GIS).
For more information, contact Dave Krolick at (916) 782-9100.
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About ECORP Consulting, Inc.

ECORP Consulting, Inc. has assisted public and private land owners with environmental regulation compliance since 1987. Find out more at www.ecorpconsulting.com. ECORP Consulting's mission is to consistently deliver high-quality environmental consulting services through outstanding science and timely, creative solutions for our clients, while providing an excellent work environment for our staff.
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