Modoc National Wildlife Refuge pond bathymetry: Dorris Reservoir bathymetric model generated from topographic data collected with a recreational sonar fish finder in support of the USFWS Water Resources Inventory and Assessment program
Published By US Fish and Wildlife Service, Department of the Interior
Issued oltre 9 anni ago
Summary
Description
Dorris Reservoir is a vital component of the water infrastructure at the U.S. Fish and Wildlife Services U.S. FWS Modoc National Wildlife Refuge MNWR. This report intends to provide detailed bathymetric data collected efficiently with a Lowrance HDS Gen2 sonar fish finder and compare results to previously assessed bathymetry. A Lowrance HDS Gen2 sonar unit with an 83200 kHz transducer was used to survey Dorris Reservoir on during the peak annual water surface elevation on May 6th and 7th, 2013. Due to the timing of the study with the WSE about 6 feet below the spillway crest elevation, resulting in reduced area accessible by the sonar system, the waters edge at the time of the sonar survey was surveyed using a Trimble GeoXH with submeter accuracy after postprocessing. A Digital Elevation Model DEM of the reservoir was developed from reservoir bottom topographic data generated from the sonar survey and waters edge points in the geographic information system GIS ArcMap 10.2.