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
OTH - Other Document
Present Land Use
Park & Reservoir/Hillside/Hillside/Regional Parks, Existing
Document Description
Note: Response to Comments 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

Development Types
Water Facilities (Type reservoir)
Local Actions
Project Issues
Biological 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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