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
Agency Name
Nevada County Irrigation District
Contact Types
Lead/Public Agency


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

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Department of Transportation, District 3 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (Canal siphon replacement)
Local Actions
Construction project

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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