Big Canyon Well Final Design Project

3 Documents in Project


SCH Number
Lead Agency
Callayomi County Water District
Document Title
Big Canyon Well Final Design Project
Document Type
MND - Mitigated Negative Declaration
Document Description
The proposed project would install a new well (Big Canyon well) to replace the District's existing Diamond-D well as the primary source of water for the area. Historically, the Diamond-D well has been the primary source of water; however, the district seeks to provide a more reliable water supply for the existing and anticipated population of Middletown by replacing the Diamond-D well with the proposed Big Canyon well and associated infrastructure. The proposed project would include a new well and concrete building pad; a paved access road and 20-ft access easement; a pump house around the well with an emergency generator and disinfection system; an approx 10,000 sf parking area; and the installation of approx 2,600 ft of an 8-in water main, part of which would be hung off the existing bridge over Putah Creek.

Contact Information

John Hammer
Agency Name
Callayomi County Water District
Contact Types
Lead/Public Agency


Cross Streets
Big Canyon Rd, Knowles Lane
Total Acres
Parcel #
State Highways
hwy 175, 29
Middletown HS, Minnie
Putah Creek, Harbin Creek, Dry Creek, St. Helena Creek
Other Location Info

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 Parks and Recreation, California Department of Transportation, District 1 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), 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 Drinking Water, District 3, State Water Resources Control Board, Division of Water Rights, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Water Facilities (Type well/pipeline)
Local Actions
Use Permit
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire

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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