East Highline Reservoir and Intake Channel Project

2 Documents in Project


SCH Number
Lead Agency
Imperial Irrigation District
Document Title
East Highline Reservoir and Intake Channel Project
Document Type
EIR - Draft EIR
Project Applicant
Imperial Irrigation District
Present Land Use
The proposed project site is zoned as A-2 (General Agriculture) and A-3 (Heavy Agriculture) (County of lmperial 2017), with a small portion that crosses a parcel of federal lands withdrawn to Reclamation. The Imperial County General Plan Land Use designation for the site is predominantly Agriculture, with a portion of the intake channel on Recreation/Open Space land.

Document Description
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.

Contact Information
Sarah Lopez
Imperial Irrigation District
333 E. Barioni Boulevard
Imperial, CA 92251

Phone : (760) 339-9353


32°43'35"N 115°16'52"W
Cross Streets
Holdridge Road and Verde School Road
Total Acres
Parcel #
005-250-020, 059-310-005, 055-310-007, 055-310-006, 059-310-006
State Highways
Finley Elementary School
East Highline Canal, All-American Canal

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Reservoir/Intake Channel)
Local Action
Other Action
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Recreation/Parks Schools/Universities Soil Erosion/Compaction/Grading Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, Inland Deserts Region 6 California Department of Parks and Recreation California Governor's Office of Emergency Services California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Regional Water Quality Control Board, Colorado River Basin Region 7 California State Lands Commission 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 California Department of Transportation, District 11


Environmental Document
Appendices A-E UPDATED   PDF 19135 K EHL Draft EIR NOA_Board   PDF 367 K EHL Draft EIR_April 2020_Public_4   PDF 4898 K
NOC   PDF 1309 K
State Comments
2019011070_Caltrans Comment   PDF 318 K 2019011070_DWR Comment   PDF 239 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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