Placer County Water Agency Middle Fork American River Weather Modification Project


SCH Number
Lead Agency
Placer County Water Agency
Document Title
Placer County Water Agency Middle Fork American River Weather Modification Project
Document Type
NEG - Negative Declaration
Present Land Use
target area is located on western slope of central Sierra Nevada and predominantly National Forest Land

Document Description
Placer County Water Agency Middle Fork American River Weather Modification Project would include the seasonal implementation of an aerial cloud seeding program for the upper middle fork American River watershed using aircraft equipped with focused silver iodide dispersal technology. The project would not result in any ground disturbing activities and is strictly designed to augment the natural rate of snowfall that occurs in orographic clouds as they develop and progress over the headwaters that drain into PCWA's primary storage reservoirs, Hell Hole and French Meadows. Cloud seeding suspension criteria would be implemented in wet years to ensure the incremental runoff generated by the project would be within the historical range of hydrologic variability for the target watersheds.

Contact Information
Benjamin Barker
Placer County Water Agency
PO Box 6570
Auburn, CA 95604

Phone : (530) 823-1742


El Dorado Placer
Cross Streets
Middle Fork American River and Rubicon River
State Highways
89, 80, 50
Placerville, Truckee-Tahoe
El Dorado, Pollock Pines
American River and Rubicon River
Other Location Info
Tahoe and El Dorado National Forests

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (aerial cloud seeding)
Local Action
Other Action Other Action: cloud seeding
Project Issues
Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Soil Erosion/Compaction/Grading Toxic/Hazardous Water Quality Water Supply
Reviewing Agencies
California Department of Fish and Wildlife, North Central Region 2 California Department of Parks and Recreation California Department of Transportation, District 3 California Highway Patrol California Native American Heritage Commission Caltrans, Division of Aeronautics Central Valley Flood Protection Board Delta Protection Commission Delta Stewardship Council Department of Water Resources Resources Agency State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Water Quality Tahoe Regional Planning Agency California Regional Water Quality Control Board, Central Valley Sacramento Region 5

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

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