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Modifying Structures for Fish Screens: Cost-Effective Solutions for Oregon's Waterways

This report by Bob Edwards from the Oregon Department of Fish and Wildlife examines the modifications needed for existing structures to install new fish screens in various locations, including Crooked River and Big Creek Hatchery. It assesses the integrity and adequacy of current structures, evaluates cost-effectiveness over short and long terms, and discusses challenges faced during installation. The analysis includes budgeting, maintenance issues, and performance evaluations, providing insights into the worthiness of these modifications and their impact on local aquatic ecosystems.

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Modifying Structures for Fish Screens: Cost-Effective Solutions for Oregon's Waterways

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  1. Modifying existing structures to install new fish screens Bob Edwards Oregon Dept. of Fish and Wildlife

  2. Crooked River Central • Is there an existing structure? • What is the integrity of the structure? • Is the location of the structure adequate? • Will it be cost effective short term and long term?

  3. Big Creek Hatchery • Big Creek • 40 CFS • Flat Panel, Single Wiper

  4. Site Construction

  5. Benefits of staying under budget

  6. Before After

  7. Lowline Ditch • Crooked River • 8 CFS • Hydrolox Belt Screen

  8. Can we make it work? • Water user has very limited funding available • Concrete is already in place • Site is in a great location in the canal

  9. Site Prep.

  10. On Site Modifications

  11. Final Project • Over budget • Performance Issues • Maintenance Issues • Was it worth it?

  12. South Fork Necanicum • City of Seaside Municipal diversion. • 8cfs • Site dates back to the 1930’s. • S. Fk. Necanicum River • 8cfs Municipal Diversion • $171,360.00 • Can we make this one work?

  13. Diversion House

  14. Now What?

  15. Temporary Screen

  16. Forming Challenges

  17. Jones Dam

  18. Peterson Point

  19. In Conclusion Short Term Benefits vs Long Term Benefits Cost Savings vs Cost Over-runs Location

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