Lake Fordyce Dam Seepage Mitigation - Mitigated Negative Declaration and Notice of Intent

5 Documents in Project

Summary

SCH Number
2020090506
Lead Agency
State Water Resources Control Board, Division of Water Rights
Document Title
Lake Fordyce Dam Seepage Mitigation - Mitigated Negative Declaration and Notice of Intent
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Forest
Document Description
Lake Fordyce Dam is on Fordyce Creek, a tributary of the South Fork of the Yuba River, in Nevada County. The dam is about 7 miles northwest of Soda Springs, California, and 15.5 miles northwest of Truckee, California. Water released from Lake Fordyce flows into Fordyce Creek, which then drains to PG&E’s Lake Spaulding. In 2005, the California Department of Water Resources, Division of Dam Safety (DSOD) instituted a seepage threshold of 30 cubic feet per second (cfs) for Lake Fordyce Dam. Seepage at Lake Fordyce Dam exceeded the threshold in November 2011. Accordingly, in 2012 DSOD required PG&E to submit a plan and schedule to mitigate the seepage. The Project is intended to bring Lake Fordyce Dam into compliance with DSOD’s seepage threshold. The Project consists of a number of prescribed improvements designed to reduce seepage. To implement these dam improvements, Lake Fordyce Road would be improved to allow construction equipment access. Additionally, a cofferdam would be constructed in Lake Fordyce to create a dry work area on the upstream face of the dam. The Project is scheduled to occur from April to October each year for three consecutive years and possible a fourth

Contact Information

Name
Jordan Smith
Agency Name
State Water Resources Control Board
Contact Types
Lead/Public Agency

Name
Agency Name
Pacific Gas & Electric Company
Contact Types
Project Applicant

Location

Counties
Nevada, Placer
Waterways
Fordyce Lake, Fordyce Creek
Other Location Info
The dam is on Fordyce Creek, a tributary of the South Fork of the Yuba River, in Nevada County; the dam is about 7 miles northwest of Soda Springs, California, and 15.5 miles west-northwest of Truckee, California

Notice of Completion

Review Period Start
Review Period End
Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 3 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Lahontan South Lake Tahoe Region 6 (RWQCB), California State Lands Commission (SLC), Central Valley Flood Protection Board, Department of Toxic Substances Control, Office of Historic Preservation, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Water Quality, California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Reviewing Agency Comments
California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)

Attachments

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