Cunningham Siphon Partial Replacement


SCH Number
Lead Agency
Nevada Irrigation District
Document Title
Cunningham Siphon Partial Replacement
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Water supply facility

Document Description
The project consists of the partial replacement of the Cunningham Siphon. This existing, raw water conveyance currently runs underground, crossing under both Dog Bar Road and Alta Sierra Drive to meet the Rattlesnake Canal. NID proposes to replace the existing 22-inch, thin-walled steel siphon pipe with a new minimum size of 24-inch diameter pipe. The new pipeline would be re-routed, beginning after the existing siphon crosses under Dog Bar Road, to an alignment that parallels that road. The replacement pipe would be installed in the dirt shoulder of the road. No change would be made to the Dog Bar Road pipeline crossing.

Contact Information
Carmen Holman
Nevada County Irrigation District
1036 W. Main Street
Grass Valley, CA 95945

Phone : (530) 273-6185


Grass Valley
Cross Streets
Alta Sierra Drive and Dog Bar Road
State Highways
Rattlesnake Canal

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Canal siphon replacement)
Local Action
Other Action Other Action: Construction project
Reviewing Agencies
California Department of Parks and Recreation California Highway Patrol Caltrans, District 3 Department of Fish and Wildlife, Region 2 Department of Health Services Department of Water Resources Native American Heritage Commission Office of Historic Preservation Regional Water Quality Control Bd., Region 5 (Sacramento) Resources Agency State Water Resources Control Board, Divison of Financial Assistance
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