New Siphon on the Tehama Colusa Canal
Summary
SCH Number
2026100964
Public Agency
Colusa County Water District
Document Title
New Siphon on the Tehama Colusa Canal
Document Type
NOE - Notice of Exemption
Received
Posted
10/26/2026
Document Description
The District proposes to construct a new siphon with associated infrastructure to divert water from the Tehama Colusa Canal (TCC). The District intends to modify an existing Warren Act Discharge by adding a new siphon at the TCC to provide water to District lands with no provision for service and/or lands served by District re-lift stations that are at capacity. The new siphon would be welded to existing pipe that feeds into the TCC. The proposed Project also includes new pipeline of approximately 104 feet in length, a new concrete pad of approximately 15’ x 40’ x 8”, a new 2,800-gallons-per-minute (gpm) booster pump, and 10 sand media filter tanks with 300 gpm per unit capacity each. There would be no disturbance to the canal’s cement lining. The Project site for construction activities is approximately one acre, including construction staging, access, and design components.
Contact Information
Name
Shelly Murphy
Agency Name
Colusa County Water District
Job Title
General Manager
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Email
Location
Cities
Arbuckle
Counties
Colusa
Regions
Northern California
Other Location Info
The proposed siphon would occur at Tehama Colusa Canal Milepost 94.83R.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 3 Section 15303 Construction of Small Structures
Reasons for Exemption
The Project is exempt under Class 3 because it consists of the construction of a new siphon and associated small-scale water conveyance and pumping facilities, including pipeline, filtration equipment, and appurtenant infrastructure. The proposed improvements are limited in size and function as a new utility facility serving existing District lands and minimal ground disturbance is necessary.
County Clerk
Colusa
Attachments
Notice of Exemption
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