Olanche Creek Diversion Project


SCH Number
Lead Agency
Los Angeles Department of Water and Power
Document Title
Olanche Creek Diversion Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use

Document Description
LADWP proposes to divert a portion of the flow from Olancha Creek into the Los Angeles Aqueduct for municipal use in accordance with pre-1914 appropriations and a 1925 Court Decree. The remaining, non-diverted portion of Olancha Creek flow would continue east of the LAA to irrigate existing vegetation. A weir, wingwall, control gate, and pipe would be installed where Olancha Creek meets LAA at the Overhead 73 structure. The proposed project involves the excavation of a settling basin (50 ft long by 50 ft wide and approx 2 ft deep) that would extend west from the westerly edge of the LAA to allow for sediments to settle out of the creek flow before it enters the LAA.

Contact Information
Jane Hauptman
Los Angeles Department of Water and Power
111 North Hope Street, Room 1044
Los Angeles, CA 90012

Phone : (213) 367-0968


36°16'42.4"N 118°01'16.3"W
Cross Streets
Fall Rd and Summer Rd
Total Acres
State Highways
US 395, SR 190
LA Aqueducts 1 & 2, Olanche Creek
Other Location Info

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (diversion facili Type)
Local Action
Other Action Other Action: creek diversion
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Department of Parks and Recreation California Department of Transportation, District 9 California Highway Patrol Department of Water Resources Resources Agency State Water Resources Control Board, Division of Water Rights California Department of Fish and Wildlife, Inland Deserts Region 6 California Native American Heritage Commission California Regional Water Quality Control Board, Lahontan Victorville Region 6

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

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