California Aqueduct Milepost 230.6 to 231.4 Investigation, Design, And Repair

3 Documents in Project


SCH Number
Lead Agency
California Department of Water Resources (DWR)
Document Title
California Aqueduct Milepost 230.6 to 231.4 Investigation, Design, And Repair
Document Type
MND - Mitigated Negative Declaration
Present Land Use
State Water Project
Document Description
The proposed project is investigation and maintenance of the State Water Project. DWR proposes to investigate, design, permit, and implement the following repairs to restore the California Aqueduct. The Project would include the following: • Conduct geotechnical exploration to determine soil behavior types, weak areas, and soil moisture contents. • Reinforce approximately 1.18 miles of Aqueduct embankment to improve soil structure and reduce seepage. • Restore the embankment to the design elevation to reduce risk of overtopping. • Repair any damage to the Aqueduct liner to prevent seepage. • Raise approximately 1.44 miles of Aqueduct liner to design elevation to prevent seepage and erosion. • Reconstruct the road on top of the restored embankment to restore access. Geotechnical investigations are proposed to begin in 2023. Results and analysis from the investigations will determine the best repair option for the Project. Potential options have been identified as appropriate remediation and include ground compaction, permeation grouting, and cut-off walls.

Contact Information

Shelly Amrhein
Agency Name
California Department of Water Resources
Job Title
Environmental Program Manager
Contact Types
Lead/Public Agency


Citywide, Countywide
Cross Streets
Elk Hills Road and California Aqueduct
Total Acres
Elk Hills-Buttonwillow Airport
Kern River Flood Canal

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Parks and Recreation, California Department of Transportation, District 6 (DOT), California Department of Water Resources (DWR), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Valley Fresno Region 5 (RWQCB), Central Valley Flood Protection Board, Office of Historic Preservation, State Water Resources Control Board, Division of Water Rights, California Department of Fish and Wildlife, Central Region 4 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Central Region 4 (CDFW)
Development Types
Other (Maintenance)
Local Actions
Investigations and Repair
Project Issues
Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Tribal Cultural Resources, 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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