Little Lake Aqueduct Crossover Project

2 Documents in Project


SCH Number
Lead Agency
Los Angeles Department of Water and Power
Document Title
Little Lake Aqueduct Crossover Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
State and Federal Lands/Open Space
Document Description
The proposed project would connect the First Los Angeles Aqueduct (LAA1) (concrete conduit) and Second Los Angeles Aqueduct (LAA2) (riveted steel pipeline) through installation of approximately 183 feet of 60-inch diameter pipe. The material to be used for the pipe is still to be determined. The LAA Crossover Project includes: • The installation of an isolation structure on the LAA1 downstream of the LAA Crossover connection. This structure will include two sets of slide gates and reinforcement of the LAA1 required for installation of the slide gates. • The installation of two 60-inch diameter butterfly valves on the Crossover pipeline to prevent back flow into the LAA1 when the LAA2 is in service. • Installation of a new crossover pipe below grade with a new mechanical platform constructed atop the replacement segment of the LAA1. • Installation of a new connection structure to allow for the connection of the LAA Crossover pipeline to the LAA1 concrete channel. • The installation of a LAA Crossover connection to LAA2 downstream of the LAA1-LAA2 intersection. • Installation of a galvanic cathodic protection system for corrosion control.

Contact Information

Kathryn Laudeman
Agency Name
Job Title
Environmental Engineering Associate
Contact Types
Lead/Public Agency


Cross Streets
Highway 395 and Unnamed Access Road
State Highways

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 9 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Lahontan Victorville Region 6 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance, California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)
Development Types
Water Facilities (Pipe Connection with Valve between Existing Aqueduct Facilities)(Type Pipe, MGD 225)
Local Actions
Site Plan
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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