Lake Ranch Reservoir Outlet Works Improvements

5 Documents in Project


SCH Number
Lead Agency
Santa Clara County
Document Title
Lake Ranch Reservoir Outlet Works Improvements
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Park & Reservoir/Hillside/Hillside/Regional Parks, Existing
Document Description
San Jose Water Co. is proposing to rehabilitate the Lake Ranch Reservoir in accordance with CA Division of Safety of Dams (DSOD) requirements. The reservoir was built between 1874-1876, with a capacity of about 70 million gallons. Due to the age of the embankments and lack of details on original construction, SJWC proposes to construct siphons over both dams and grout the existing outlet pipes, rather than replace them. Based on the DSOD's drawdown requirements, the siphon at Saratoga dam will consist of a 12-inch diameter pipe. At Beardsley dam, the siphon will consist of a 4-inch diameter pipe with 16-inch emergency pipe. The siphons will be constructed using high density polyethylene piping. The pipes will be buried and concrete-encased where they cross over the dam abutments, and will be mounted on the lake bottom with floating intakes.

Contact Information

Kimberly Brosseau
Agency Name
Santa Clara County
Contact Types
Lead/Public Agency


Santa Clara
Cross Streets
Skyline Blvd./Gist Rd.
Total Acres
Parcel #
State Highways
Lyndon Canyon Creek, unnamed tributary to Sanborn Creek

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 4 (DOT), California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Resources Agency, Resources, Recycling and Recovery, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Development Types
Water Facilities (Type reservoir)
Local Actions
Project Issues
Biological Resources, Cultural Resources, Flood Plain/Flooding, Geology/Soils, Hydrology/Water Quality, Recreation, Transportation, Vegetation, Wetland/Riparian

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 or via phone at (916) 445-0613.

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