Merced County is proposing to implement a flood control project immediately upstream of the Black Rascal Creek Diversion Channel. The proposed detention basin and wetland area would temporarily store flow during periods of heavy rain and limit flow in the Diversion Channel to 3,000 cfs. The proposed project would include a perimeter levee surrounding a 300-acre inundation area, to accommodate up to 2,800 acre-feet of water during a 200-year storm event, and an internal levee to protect agricultural land within the basin during more frequent storms, up to a 50-year event. The detention basin outlet would also include a series of reinforced concrete box culverts to limit flows in the diversion channel to 3,000 cfs.
California Department of Parks and Recreation, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Fresno Region 5 (RWQCB), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Department of Water Resources, Resources Agency, State Water Resources Control Board, Division of Drinking Water, California Department of Transportation, District 10 (DOT), California Department of Fish and Wildlife, Central Region 4 (CDFW)
State Reviewing Agency Comments
California Department of Transportation, District 10 (DOT), California Department of Fish and Wildlife, Central Region 4 (CDFW)
Other (2,800 acre foot flood control/detention basin)
Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Transportation, Vegetation, Wetland/Riparian
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