Davis-Woodland Water Supply Project

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The Davis-Woodland Water Supply Project will improve the water supply for the communities of Davis and Woodland, including the University of California at Davis, and meet existing and future water needs through 2040. The project includes a facility to divert water from the Sacramento River through a conveyance pipeline to a water treatment plant, as well as pipelines connecting to partner service areas.

ESA prepared the environmental impact report that evaluated the impacts of constructing facilities and pipelines to divert up to 46 thousand acre-feet of water per year from the Sacramento River. We oversaw studies analyzing potential changes to the hydrology and water quality of the Sacramento River and Sacramento-San Joaquin Delta using CALSIM II and DSM2 computer models. Our team evaluated the potential effects of water diversion on fish and aquatic species, and treatment facility project impacts to wetlands, special-status vegetation, and wildlife species, and cultural resources. ESA prepared documentation in compliance with the U.S. Corps of Engineers 404 Permit process, NEPA, and Section 7 of the Endangered Species Act.

Additional studies addressed the cumulative and growth-inducing effects within each partner's service area, along with an assessment of groundwater resources, public health risk, and potential effects on other legal water users.

ESA's technical excellence minimized environmental impacts for this critical water supply project.

Specialized Services

  • Air quality assessments
  • Baseline protocol and surveys
  • California Department of Fish and Game streambed agreements
  • Clean Water Act
  • Endangered Species Act
  • Environmental impact reports
  • Environmental scoping meetings
  • Fish passage design
  • Historical investigations, documentation, and plans
  • Hydrologic and hydraulic modeling
  • Modeling and analysis
  • National Historic Preservation Act (NHPA)
  • Native American, ethnographic, and archaeological studies
  • Section 106 compliance and documentation
  • Special status species surveys and inventories
  • US Army Corps of Engineers
  • US Fish and Wildlife Service
  • Water quality analyses
  • Wetland delineations