Colorado River Aqueduct Exposed Barrel Repairs Project


SCH Number
Public Agency
California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)
Document Title
Colorado River Aqueduct Exposed Barrel Repairs Project
Document Type
NOE - Notice of Exemption
Document Description
The California Department of Fish and Wildlife has executed Lake and Streambed Alteration Agreement number EPIMS-RIV-17092-R6, pursuant to Section 1602 of the Fish and Game Code to the Metropolitan Water District of Southern California

Contact Information

Alyssa Marquez
Agency Name
Lead Agency
Contact Types
Lead/Public Agency


NA, Palm Springs
Southern California
Other Location Info
The Project is located at three locations along the underground Colorado River Aqueduct where it intersects the San Gorgonio River, an unnamed tributary to the San Gorgonia River and an unnamed tributary to Mission Creek, in the County of Riverside, State of California. Station: 9434+50, Latitude: 33.980907, Longitude: - 116.584911; Station: 9977+00, Latitude: 33.927718, Longitude: -116.729769; Station: 10101+65, Latitude: 33.905693, Longitude: -116.757923.

Notice of Exemption

Exempt Status
Statutory Exemption
Type, Section or Code
15269 (b)
Reasons for Exemption
This Project is limited to the repair of a privately owned service facility (Colorado River Aqueduct) necessary to maintain service essential to the public health, safety or welfare. The section of the Colorado River Aqueduct (CRA) that needs repair consists of a buried cast-in-place concrete conduit that relies on earthen groundcover for structural stability. Without such stability the exposed CRA poses a substantial risk of failure due to: (1) structural damage resulting from boulder strikes during storm events and (2) erosion-induced collapse if the downstream side of the conduit becomes further exposed and lacks sufficient groundcover to support its weight. These failures would necessitate a long-term shutdown of the entire CRA, interrupting the delivery of water to nearly 19 million southern California residents.


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