What is the environmental impact of the Auburn Dam?
The Detention Dam alternative would allow would allow the discontinuation of the Folsom Reoperation Plan. This would allow for higher Folsom Reservoir levels which could benefit downstream fisheries with better water quality and colder temperatures. High lake levels at Folsom Reservoir would enhance the beauty of the lake and the recreational experience. Downstream levee improvements included in this alternative will impact the American River Parkway. Depending on the size of the flood event, the dam will temporarily back up the north and middle forks of the American River, inundating up to 5,500 acres. Approximately 1369 acres of the canyon would be lost to the operation of the project: 79% oak woodland, 8% chaparral, 6% pine forest, and 7% riverine habitat. Mitigation and in-kind replacement for project impacts are included in this alternative.
