Upper Chiquita Reservoir Emergency Storage Project

Upper Chiquita Reservoir Emergency Storage Project

The proposed project would include development of an earthfill dam structure and a covered, domestic water reservoir with a storage volume of 720 AF within the City of Rancho Santa Margarita north of Oso Parkway and west of the current terminus of State Route 241. The reservoir footprint would be approximately 19.7 acres with a surface area of approximately 15.4 acres and would have a High Water Level of 860 feet. The overall permanent disturbance area for the project would encompass approximately 27 acres. In addition to the proposed dam and reservoir, the project also proposes the following facilities: access roads, spillway and drainage facilities, inlet/outlet facilities, a pump station, disinfection equipment, and pipeline connection to the South Orange County Pipeline.

Rancho Santa Margarita

Orange

California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), Department of Toxic Substances Control, Resources Agency, State Water Resources Control Board, Division of Water Rights, California Native American Heritage Commission (NAHC), Department of Water Resources, California Department of Transportation, District 12 (DOT)

California Native American Heritage Commission (NAHC), Department of Water Resources, California Department of Transportation, District 12 (DOT)

Water Facilities (Type Reservoir, MGD 720 AF)

Site Plan

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire