East Highline Reservoir and Intake Channel Project

East Highline Reservoir and Intake Channel Project

The proposed project includes an operational reservoir facility, covering approximately 370 acres, which would manage up to 3,400 acre-feet of water. The water managed in the proposed reservoir would be channeled from the All-American Canal (AAC), via pipelines proposed under Highway 98 and into the operational reservoir prior to then gravity flowing into the East Highline (EHL) Canal. The EHL Canal is one of three main canals that branch off the AAC, a facility owned by the U.S. Department of the Interior through the Bureau of Reclamation (Reclamation), serving the water service area of IID. Water temporarily stored in the proposed reservoir would be delivered into the EHL Canal to serve downstream agricultural demands through an automated gate outlet with a gravity flow capacity of approximately 1,500 cfs. Water managed by the proposed reservoir would be delivered to agricultural water users located downstream. IID does not provide treated water service. The proposed intake channel would branch off the north side of the AAC to convey the operational water flows from the AAC to the proposed reservoir at a flow rate ofup to 1,500 cubic feet per second (cfs). Approximately 36 acres of the proposed intake channel would be constructed on agricultural land and approximately 11 acres would cross Reclamation federally-owned lands. The proposed intake would consist of an open channel that serves a dual purpose as a desilting basin measuring approximately 7 5 feet wide and 10 to 15 feet deep from the top of the embankments with maintenance roads along the sides. The proposed reservoir would have a contoured floor to allow water to gravity flow into the EHL Canal and utilize the natural terrain to promote a balanced and efficient use of cut and fill. The proposed reservoir and proposed intake channel would be excavated to a maximum of approximately five feet below grade. Impacts to the AAC include the cutting of the AAC bank to allow a direct connection to the open intake channel. The cut bank and flow gate would alter approximately 150 feet of the AAC bank.

Holtville

Imperial

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW), California Department of Parks and Recreation, California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB), California State Lands Commission (SLC), Colorado River Board, Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Water Resources (DWR), California Department of Transportation, District 11 (DOT)

California Department of Water Resources (DWR), California Department of Transportation, District 11 (DOT)

Water Facilities (Reservoir/Intake Channel)

Other

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hydrology/Water Quality, Mineral Resources, Recreation, Schools/Universities, Vegetation, Wetland/Riparian, Wildfire