NID Hemphill Diversion Structure

2 Documents in Project


SCH Number
Lead Agency
Nevada Irrigation District
Document Title
NID Hemphill Diversion Structure
Document Type
NOP - Notice of Preparation
Present Land Use
City of Lincoln: Village 1 (V-1) (portions of all four alternatives are within Lincoln City limits) Placer County: Agriculture/Timberland – 10 ac min. (includes portions of Alternative 3 within the Placer County unincorporated area)

Document Description
The Proposed Project includes analysis of four potential alternatives including: 1) Riverbank Infiltration Gallery Alternative, 2) Fish Passage Alternative, 3) Pipeline Alternative, and 4) Abandonment of Hemphill Canal Alternative. The alternatives vary as far as construction attributes and areas of potential disturbance. All of these alternatives are designed to allow for fish passage beyond the Hemphill Diversion Structure on Auburn Ravine. This project will require further CEQA environmental review in the form of an environmental Impact Report (EIR).

Contact Information
Tonia M. Tabucchi Herrera
Nevada Irrigation District
Lead/Public Agency
1036 Main Street
Grass Valley, CA 95945

Phone : (530) 273-6185

Nevada Irrigation District
Project Applicant


38°53'48.2"N 121°15'6.8"W
Grass Valley
Cross Streets
West of Virginatown Road and Mini Ranch Road
State Highways
12 N
6 W
Other Location Info
The Hemphill Diversion Structure is located on Auburn Ravine northeast of the City of Lincoln, California. The structure diverts water from Auburn Ravine into the Hemphill Canal located south of the ravine for delivery to NID raw water customers. The Hemphill Diversion Structure is located in Section 13, Township 12 North, and Range 6 West (Mount Diablo Base and Meridian) of the “Lincoln” 7.5-minute quadrangle

Notice of Completion

Review Period Start
Review Period End
Local Action
Reviewing Agencies
California Air Resources Board (ARB) California Department of Conservation (DOC) 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 Water Resources (DWR) California Governor's Office of Emergency Services (OES) California Highway Patrol (CHP) California Natural Resources Agency California Public Utilities Commission (CPUC) California State Lands Commission (SLC) Central Valley Flood Protection Board Department of General Services (DGS) 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 California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB) California Department of Transportation, District 3 (DOT)


Environmental Document
Initial Study_Public Review Draft_reduced   PDF 5158 K NOC Summary_NOP_PD   PDF 221 K NOP   PDF 188 K
NOC_NOP_signed   PDF 1605 K
State Comments
2020090032_Caltrans Comment   PDF 557 K 2020090032_NAHC Comment   PDF 497 K 2020090032_RWQCB Comment   PDF 269 K

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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