Acorn Reservoir Replacement Project

Acorn ReservoirAs part of EBMUD’s infrastructure renewal program, the Acorn Reservoir located at the end of Eagle Ridge Drive in Blackhawk will be replaced. The existing 1.2-million gallon (MG) welded-steel reservoir is oversized for the community it serves and has reached the end of its useful life. EBMUD will build two smaller tanks with the combined capacity of 1 million gallons. Replacing one large tank with two will allow EBMUD to take one tank out of service during low-demand periods. This will reduce maintenance costs and improve water quality.

Workplan and schedule

Replacement Tanks at Acorn Reservoir

EBMUD will be restarting construction at Acorn Reservoir. The original contractor had experienced construction delays and requested to terminate their contract due to financial hardship.

Work was completed on Acorn 2 reservoir by the previous contractor and now a new contractor will be completing Acorn 1 Reservoir. Construction will star Month Day, Year and will be completed in Season Year.

Completion of the project calls for the demolish of the existing 1.2 MG Acorn steel tank, which is already out of service; install a second 0.6 MG concrete reservoir including foundation, access stairs, fall protection, valve vault, and related piping. Additional improvements will be done for electrical and fencing; repave reservoir site and access road.

During the completion of the reservoir, residents can expect to hear and see hauling trucks and equipment required for grading. Allowable work hours for this project are:

  • Monday through Friday from 7:30 a.m. to 6 p.m.

There are no anticipated water service interruptions associated with this project. 

The Acorn Reservoir is part of a project that includes three additional reservoirs upgrade which includes, Derby Reservoir, Scenic Reservoir, and Scenic East Reservoir.  The active construction period for the Acorn Reservoir project will be from October 2020 to the summer of 2022. Schedule is subject to change.

Contact information

Joe Voelker, Community Affairs Representative
Community Affairs
Email: construction-east@ebmud.com 
Phone: 510-287-2053

Emergencies or after-hours, call EBMUD at 866-403-2683