2002.0475 O'Shaughnessy Dam Discharge Modification Project
4 Documents in Project
Summary
SCH Number
2003022032
Lead Agency
City and County of San Francisco
Document Title
2002.0475 O'Shaughnessy Dam Discharge Modification Project
Document Type
NEG - Negative Declaration
Received
Present Land Use
Dam facility, Recreation and Domestic Water supply land uses under 1980 Yosemite National Park Management Plan.
Document Description
The project consists of modifying the piping at O'Shaughnessy Dam that controls discharge from the Hetch Hetchy Reservoir to the existing 108-inch Canyon Power Tunnel pipeline (or penstock) at the base of the dam, and the downstream water transmission system. The piping modification proposes to construct a new 60 inch pipeline to allow withdrawal of water from a higher level in the resevoir, to be used when trubidity in the resevoir is above the allowable level. The modification will also increase the reliability of the outlets and reduce head loss.
Contact Information
Name
Randall Dean
Agency Name
San Francisco Planning Department
Contact Types
Lead/Public Agency
Phone
Location
Counties
Tuolumne
Cross Streets
Hetch Hetchy Road
Waterways
Tuolumne River, Hetch Hetchy Reservoir
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Conservation (DOC), California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Water Facilities (Type dam)
Local Actions
Approval by San Francisco Public Utilities Comm.
Project Issues
Aesthetics, Air Quality, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian, Wildlife
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.