Photo Credit: Source: Contra Costa Water District http://www.ccwater.com/losvaqueros/
Los Vaqueros Dam
Near Brentwood, California


URS was responsible for the planning and design of the dam from the inception of site selection and reservoir sizing studies, to completion of final design and bidding documents.

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Project Details

Los Vaqueros Dam is a 195-foot high zoned earthfill structure which impounds a 100,000 acre foot reservoir. It is a key element of the Contra Costa Water District’s $450 million Los Vaqueros Project. The project provides a supply of high quality water and also increases the reliability of the District’s supply system.

As the District’s consultant since 1987, URS was responsible for the planning and design of the dam from the inception of site selection and reservoir sizing studies, to completion of final design and bidding documents. URS then provided full field engineering and QA/QC testing during construction of the dam, which was completed in January 1998. An important task included obtaining approval of dam design from the California Division of Safety of Dams and coordination with them during construction. The scope of URS services has encompassed the full range of dam engineering, including:

  • evaluation of 4 alternative sites and 11 different dam heights
  • foundation and materials investigations, including laboratory testing
  • regional fault investigations and development of all seismic design criteria
  • support to environmental impact analyses and project permitting
  • preliminary design and cost estimates of alternatives
  • static and seismic stability analyses
  • final design, preparation of plans and specifications, and engineer’s estimate
  • field engineering during construction, including QA/QC testing
  • design of instrumentation system for performance monitoring
  • provided our DamSmart software system and training workshop

Client

Contra Costa Water District

Location

Near Brentwood, California

Services

Planning, Investigations
Site Selection
Feasibility Evaluation
Preliminary and Final Design Construction Documents
Construction Engineering and Field Services
Instrumentation and ADAS Systems Design
Instrumentation and ADAS Installation, Training and O&M
DamSmart System