SCH Number 2020090506


Project Info

Title
Lake Fordyce Dam Seepage Mitigation - Mitigated Negative Declaration and Notice of Intent
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
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8 documents in project

Type Lead/Public Agency Received Title
State Water Resources Control Board, Division of Water Rights Lake Fordyce Dam Seepage Mitigation Project
State Water Resources Control Board, Division of Water Rights Lake Fordyce Dam Seepage Mitigation Project
State Water Resources Control Board Addendum to the Initial Study and Mitigated Negative Declaration for the Lake Fordyce Dam Seepage Mitigation Project
State Water Resources Control Board Notice of Determination for Lake Fordyce Dam, No. 97-28
State Water Resources Control Board Lake Fordyce Dam Seepage Mitigation (Lake or Streambed Alteration Agreement No. 1600-2020- 0147-R2)
State Water Resources Control Board, Division of Water Rights Lake Fordyce Dam Seepage Mitigation, Notice of Determination
State Water Resources Control Board, Division of Water Rights Lake Fordyce Dam Seepage Mitigation, Notice of Determination
State Water Resources Control Board, Division of Water Rights Lake Fordyce Dam Seepage Mitigation - Mitigated Negative Declaration and Notice of Intent