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Consultants update county on Big Valley hydrologic model to protect Clear Lake hitch spawning
Summary
O'Connor Environmental and county partners updated the Board on a surface water–groundwater hydrologic model for Big Valley to evaluate streamflow and habitat for the Clear Lake hitch; the model will be calibrated this summer and used to test scenarios affecting spawning flows.
Consultants with O'Connor Environmental and county staff briefed the Lake County Board on April 7 about a multi-year integrated hydrologic modeling study covering Big Valley watersheds and groundwater that is intended to inform strategies for maintaining streamflows during the Clear Lake hitch spawning season.
Presenters said the model integrates streamflow gauge data, groundwater elevations, LiDAR-derived channel geometry, well completion reports and agricultural water-use datasets to relate surface and subsurface…
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