Owens Gorge Power Plant Repairs: Request for Seepage Flow (Streambed Alteration Agreement No. EPIMS-MOO-62579-R6)
8 Documents in Project
Summary
SCH Number
2010021063
Lead Agency
Los Angeles Department of Water and Power
Document Title
Owens Gorge Power Plant Repairs: Request for Seepage Flow (Streambed Alteration Agreement No. EPIMS-MOO-62579-R6)
Document Type
NOD - Notice of Determination
Received
Posted
1/28/2026
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement (EPIMS-MOO-62579-R6), pursuant to Fish and Game Code section 1602, the project Applicant, Los Angeles Department of Water and Power (Permittee).
The Project is limited to the release of water to the Owens River below the Court-ordered Managed Average Base flows between Tunnel 1 and the Upper Gorge Power Plant as defined in the Stipulation for Entry of Final Judgment and Permanent Injunction and Order of Final Judgment and Permanent Injunction (Case No. 10088). Flows will be reduced to seepage flows (from Long Valley Reservoir) between Tunnel 1 and the Upper Gorge Power Plant during a temporary outage of Tunnel 1 and its associated penstock, so that the Permittee may inspect Tunnel 1 and its associated penstock, shutoff valve, surge chamber, and tunnel slidegate, and repair the pressure-relief valves at the Upper Gorge Power Plant. Reduced seepage flows of approximately 16 cfs will be maintained though the Owens River Gorge between February 17, 2026 and March 4, 2026. The entire project is anticipated to take
approximately two weeks to complete.
Contact Information
Name
Jane Hauptman
Agency Name
Los Angeles Department of Water and Power
Job Title
Manager of Environmental Planning and Assessment
Contact Types
Lead/Public Agency
Phone
Email
Name
Bryant Luu
Agency Name
Fish and Wildlife, Region 6
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Location
Counties
Mono
Regions
Southern California
Township
5S
Range
31E
Section
5 & 16
Other Location Info
Located in the Owens River Gorge, a tributary to Owens Lake.
Notice of Determination
Approving Agency
Fish and Wildlife, Region 6
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Mono
Final Environmental Document Available at
Los Angeles Department of Water and Power
111 N. Hope Street, Room 1044
Los Angeles, CA 90012
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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