SCH Number 2008012044

Project Info

Title

Mono Gate One Diversion Facility Upgrade Project

Description

The City of Los Angeles Department of Water and Power (LADWP) is proposing the upgrade and modification of the existing weir structure at Mono Gate One to meet present day requirements. Additionally, the project will improve functionality of the facility by installing current technology in monitoring, communication, and control devices. The project is located in the southwestern portion of Mono County, California. The Grant Reservoir is located approximately 0.5 mile to the west, and Mono Lake is located approximately 6.0 miles to the northeast of the project site. The primary access to the project site is from State Highway 395 via West Portal Road. The proposed Mono Gate One Facility Upgrade Project consists of: (1) construction of an approximately 150-foot bypass pipeline and valve installed to ensure that flows to Lower Rush Creek will not be interrupted. This pipeline will eventually be maintained as a bypass pipeline; (2) improvements to the Mono Gate structure, installation of equipment (for flow control and monitoring telemetry), and a new measuring station in the Rush Creek Return Ditch downstream of the bypass pipeline; and (3) either a new 12 kilovolt overhead power line from the Grant Reservoir shaft house to Mono Gate One along the existing road or a solar power array at the Mono Gate One facility to power operations. The completion of the project will (1) improve the structure integrity of the Mono Gate One Diversion facility, (2) allow for better flow control and measurements from the Grant Reservoir to Lower Rush Creek and Mono Craters Tunnel, and (3) allow for better communications, flow monitoring and flow control between the Mono Gate One facility and LADWP's Bishop facilities.

2 documents in project