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Environmental Services

Dean Messer, Chief

3500 Industrial Blvd.
West Sacramento, CA 95691
(916) 376-9699

Mailing Address:
P.O. Box 942836
Sacramento, CA 94236-0001



FRPA-Prospect Island Restoration

Prospect Island Tidal Habitat Restoration Project

Component of the Fish Restoration Program Agreement (FRPA)

The Prospect Island Tidal Habitat Restoration Project is a joint effort by the California Department of Water Resources (DWR) and the California Department of Fish & Wildlife (CDFW). Together they are developing the plan to restore the property to freshwater tidal wetland and open water (subtidal) habitats to benefit native fish and improve aquatic ecosystem functions. Restoration will entail interior grading, vegetation management, possible clean fill import for subsidence reversal, possible weir installation, breaching of exterior levees, and addressing various property considerations. Monitoring will take place as part of a science- based adaptive management plan. The design of future restoration projects will incorporate knowledge gained through the implementation and monitoring of this project.

The project is a component of DWR's and CDFW's Fish Restoration Program Agreement (FRPA). FRPA implements the fish habitat restoration actions for the following requirements: US Fish and Wildlife Service and National Marine Fisheries Service biological opinions on the State Water Project (SWP) and Central Valley Project coordinated long-term operations and CDFW Incidental Take Permit for SWP Delta operations. The project is in concordance with DWR’s Environmental Stewardship Policy, which states that DWR has a responsibility to protect and restore the environment and should implement projects that contribute to the recovery of listed species.

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Location Prospect Island is a 1,600-acre property located in Solano County, in the northwestern part of the Sacramento-San Joaquin Delta. Prospect Island lies between the Sacramento Deep Water Ship Channel on the west and Miner Slough on the east. It is located just east of the naturally restored 4,500-acre Liberty Island. DWR owns the northern 1,300 acres and the Port of West Sacramento owns the southern 300 acres.

Draft Environmental Impact Report

DWR has released the Prospect Island Tidal Habitat Restoration Project Draft Environmental Impact Report (DEIR) in compliance with the California Environmental Quality Act. The DEIR analyzes project alternatives and stakeholder input as part of the environmental review process for the project.

There are several ways that you can review or provide input on the DEIR, or learn more about the project:

  • View and download the DEIR by clicking [here].
  • Visit any of the following libraries to review a printed copy of the DEIR:

Rio Vista Library
44 South Second Street
Rio Vista, CA 94571

Walnut Grove Library
14177 Market Street
Walnut Grove, CA 95690

Fairfield Civic Center Library
1150 Kentucky Street
Fairfield, CA 94533

Vacaville Public Library − Cultural Center
1020 Ulatis Drive
Vacaville, CA 95687

  • Access a printed copy at the Solano County Clerk’s Office:

Solano County Recorder’s Office
675 Texas Street, Suite 1900
Fairfield, CA 94533

The DEIR is available for public review for a 45-day comment period, from Tuesday, August 23, 2016 to Friday, October 7, 2016. Written comments must be received no later than 5:00 pm on Friday, October 7, 2016.

Stakeholders may provide comments via the following methods:

Department of Water Resources
Attention: Daniel Riordan
P.O. Box 942836
Sacramento, CA 94236

  • At the Public Open House that will be held on September 27, 2016, from 7−9 pm at the following address:

Suisun City Nelson Community Center, Meeting Room A
611 Village Drive
Suisun City, CA 94585

Associated Prospect Island Documents

Contact Us

If you have questions or would like to be added to our FRPA listserve, please send your name and email address to Dan Riordan at