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D4: Fish Habitat and Passage Improvement

This project helps restore and maintain healthy steelhead trout populations by improving fish passage and habitat. Possible work sites include Alamitos Creek at Lake Almaden and Ogier Ponds in the Coyote watershed, where man-made creek alterations disrupt fish migration. The project also includes studies of steelhead streams throughout the county to determine where improvements are needed to support spawning, rearing and migration. Funding also pays for the development of a program to use large woody debris to create fish habitat.


  • Improves spawning and rearing habitat within the Coyote, Guadalupe and other watersheds
  • Improves steelhead trout habitat
  • Helps provide required mitigation for environmental impacts of reservoir and recharge operations and for countywide Stream Maintenance Program.

Project Status

(As of June 2017)

  1. Public review of the draft EIR for the Almaden Lake Project is expected by late 2017. The final feasibility report for the Ogier Ponds Project is to be completed by early 2018. The District completed 90% design for the Bolsa Road Fish Passage Project. 

  2. The City of San José has completed a feasibility study related to the removal of the Singleton Road fish passage barrier. The District is working on a partnership agreement with the city to provide support for City’s effort to remove the Singleton Road Bridge and associated channel restoration. The development of the criteria for site selection for gravel and large woody debris augmentation is to be completed in FY18. 

 Key Performance Indicators

  1. Complete planning and design for 2 creek/lake separations.
  2. Construct 1 creek/lake separation project in partnership with local agencies.
  3. Use $6 million for fish passage improvements.
  4. Conduct study of all major steelhead streams in the county to identify priority locations for installation of large woody debris and gravel as appropriate.
  5. Install large woody debris and/or gravel at a minimum of 5 sites (1 per each of 5 major watersheds).



Priority D-200

Project Information

StatusAdjusted (schedule adjustment)
Project StartFY 2014
Project FinishFY 2019
Safe Clean Water
Program funding

$26.2 M**

(2015 Dollars)

**More financial information: 5-Year Implementation Plan, pages: 19-27

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