St. Johns Canyon Channel Erosion Damage Repair - Final Design


SCH Number
Lead Agency
Metropolitan Water District of Southern California
Document Title
St. Johns Canyon Channel Erosion Damage Repair - Final Design
Document Type
NOE - Notice of Exemption

Document Description
The St. Johns Canyon Channel was constructed in 1999 as an element for the Metropolitan Water District of Southern California (Metropolitan) Diamond Valley Lake East Dam. It was designed to capture storm water runoff and to protect Goodhart Canyon Detention Basin from flooding. Recent development within tributary areas upstream of Metropolitan's property has increased storm runoff. The concrete channel has eroded as a result of storm runoff, which has created voids on the underside of the concrete lining. In some locations, the concrete lining has cracked and has displaced sufficiently to require replacement. Prompt repairs are warranted to arrest the degradation of the lining. Metropolitan proposes to repair final design for repair of erosion damage at St. Johns Canyon Channel.

Contact Information
William Fong
Metropolitan Water District of Southern California
P.O. Box 54153
Los Angeles, CA 90054

Phone : (213) 217-6899



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301
Reasons for Exemption
The proposed project consists of the maintenance, and operation of existing equipment and facilities with negligible or no expansion of use beyond that existing at the time of the lead agency's determination. In addition, the proposed action will not have a significant effect on the environment.

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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