The Project is a dewatering event and shutdown of the Lake Skinner Outlet Tower. Dewatering is to allow staff to conduct maintenance. This event will begin April 4, 2021 continuing through April 10, 2021, or modified dates with CDFW approval. Project activities in the stream areas include the placement of erosion control measures and the release of water into jurisdictional areas from one discharge locations within Tucalota Creek. Dewatering methods include releasing water via an existing outlet pipe; diverting raw water through a filtration system, dissipation socks, or dewatering hoses; and discharging the water to stream areas.Between the defined dates, 3.1 acre feet (AF) of raw water will be released into the Lake Skinner concrete spillway, located near the southern end of the Lake Skinner Dam, and temporarily held in a grouted riprap basin at the base of the spillway. The water will be released from the basin to Tucalota Creek through an existing drain valve at a rate of 75-100 gallons per minute, equal to about 0.17-0.22 cubic feet per second (cfs). The release will be regulated at the release valve to maximize percolation into Tucalota Creek. While one dewatering discharge is planned for this location, Metropolitan may be required to dewater the Lake Skinner Outlet Tower up to five additional times at up to 5 cfs to make the necessary repairs, if deemed necessary following the post-repair inspection.