|North Delta Drought Salinity Barriers Project
||The Department of Water Resources is proposing the North Delta Drought Salinity Barriers Project (Project) to maintain water quality within the Sacramento-San Joaquin Delta. The proposed Project consists of installing two temporary rock barriers, on Miner and Steamboat sloughs, that are designed to control salinity intrusion from the Central and South Delta by keeping more freshwater flow in the Sacramento River. Each barrier consists of a trapezoidal embankment rock structure with a wide base that tapers up to a 12-foot-wide top set perpendicular to the channel alignment. Both barriers have a manually operated fish passage culvert that can be opened periodically to allow fish passage. The proposed Project also includes a boat ramp at the Steamboat Slough barrier site.
|Big Creek Dam No. 4 Low Level Outlet Repair and Dam Resurfacing Project
||On November 18, 2022, SCE filed a water quality certification application for the Big Creek Dam No. 4 Low Level Outlet Repair and Dam Resurfacing Project (Project). The Project involves dewatering a portion of the Powerhouse No. 2 forebay above Big Creek Dam No. 4 surrounding the low level outlet, replacing the low level outlet works, resurfacing the downstream face of the dam, and treating water seeping through the dam and diverting it around the downstream work site back into Big Creek.
|Big Sulphur Creek – III Water Extraction Facility Replacement Project
||On September 28, 2022, Calpine Corporation filed a water quality certification application for the Big Sulphur Creek – III Water Extraction Facility Replacement Project (Project). The Project involves replacing a surface water intake facility on Big Sulphur Creek in the Geysers Geothermal Steam Field in Sonoma County, California. The project is limited to removal and replacement of an existing water diversion system which draws water from Big Sulphur Creek and provides injection water as part of Calpine’s geothermal operation at the Geysers. The current diversion includes a screened intake that hangs from a bridge and is lowered into the channel as needed to divert water. Two pumps sit on the channel bank that pump the diverted water approximately 100 vertical feet uphill to an injection well. The new diversion system permanently installed in the channel and will include a new screen and pumping and piping system to reduce impacts to multiple aquatic species, the environment, and improve the safety and operations of the diversion. Additionally, rock riprap will be used as part of a bank stabilization effort to facilitate access to the site.
|South State Water Project Hydropower
||The California Department of Water Resources (DWR) and the Los Angeles Department of Water and Power filed an application with the State Water Resources Control Board (State Water Board) for a water quality certification amendment for the South State Water Project Hydropower (Project). The amendment would make the following changes: 1) minor language adjustments to Condition 3; 2) modification of ramping rates for downstream water deliveries made to United Water Conservation District; 3) removal of Condition 6, Large Woody Material; and 4) removal of Condition 7, Gravel Enhancement.
|Camp Far West Auxiliary Spillway Project
||On July 3, 2017, the Federal Energy Regulatory Commission (FERC) issued a letter to South Sutter Water District (SSWD) directing SSWD to increase the Camp Far West Dam spillway’s existing capacity from 106,500 cubic feet per second (cfs) to 134,100 cfs to reduce the risk of dam failure. On February 17, 2022, SSWD filed a water quality certification application associated with its FERC license amendment request for the Camp Far West Auxiliary Spillway Project (Project). The Project consists of constructing a new auxiliary spillway and inlet channel that would be located adjacent to the existing Camp Far West Dam spillway to implement FERC’s directive for additional spillway capacity. The new auxiliary spillway would also require a new bridge on the existing roadway.
|Bear Creek Diversion Dam Replacement Project
||Demolish the existing Bear Creek Diversion Dam and pipeline and replace with a new dam approximately 100 feet downstream. Reconstruct the intake structure and a portion of the conveyance canal.