American River Watershed, California, Folsom Dam Raise Modifications Project: Final EIS/EIR

30 Documents in Project


SCH Number
Lead Agency
Central Valley Flood Protection Board
Document Title
American River Watershed, California, Folsom Dam Raise Modifications Project: Final EIS/EIR
Document Type
FIN - Final Document
Present Land Use
Recreation/flood control use
Document Description
The Folsom Dam Raise Modifications Project includes construction of a new Dike 3, concrete floodwall raises on Dike 1, Dikes 4-7, and the Mormon Island Auxiliary Dam (MIAD), onsite borrow and disposal at MIAD West, rock crushing operations at MIAD East, project mitigation plan and smaller scale actions. The purpose of the Folsom Dam Raise Modifications Project is to reduce the risk of flooding to the Sacramento area by adding operational flexibility and enhanced management of the enlarged flood storage capacity (in the form of surcharge) of Folsom Lake.

Contact Information

Kalia Schuster at Department of Water Resources
Agency Name
Central Valley Flood Protection Board
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


El Dorado, Placer, Sacramento
Northern California
State Highways
US Route 50, Interstate 80
American River, Folsom Lake
Other Location Info
The Folsom Dam Raise Flood Modifications Project is located in Sacramento, Placer and El Dorado Counties in California, downstream from the confluence of the north and south forks of the American River, near the city of Folsom. Folsom Dam is located about 20 miles northeast of Sacramento, CA.
Other Information
The Supplemental Environmental Impact Report, with comments and responses, and record of approval is available to the general public at the Central Valley Flood Protection Board's office. Please note, the signed NOD, Findings and Statement of Overriding Considerations is not attached. If you would like to request a signed copy of these documents, please contact Board Staff at:

Notice of Completion

State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of State Parks, Division of Boating and Waterways, California Department of Transportation, District 3 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Department of Toxic Substances Control, Office of Historic Preservation, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights
Development Types
Other (Flood Risk Reduction Improvements)
Local Actions
Flood Improvements
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hydrology/Water Quality, Noise, Recreation, Transportation, Tribal Cultural Resources, Vegetation


Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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