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BPA Proposal 31019 Fish Passage Assessment & Prioritization Program Washington County Land Use & Transportation Greg Miller, P.E., Operations Manager Principal.

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Presentation on theme: "BPA Proposal 31019 Fish Passage Assessment & Prioritization Program Washington County Land Use & Transportation Greg Miller, P.E., Operations Manager Principal."— Presentation transcript:

1 BPA Proposal Fish Passage Assessment & Prioritization Program Washington County Land Use & Transportation Greg Miller, P.E., Operations Manager Principal Investigator: Janet Oatney

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4 Scope of the Problem ODF&W evaluated 69 of approximately 3000 existing culverts

5 Typical Washington Co. Culverts

6 Consistent Limiting Factors Watershed Subbasin Province Basin

7 Relationship to Hydro System 24 Dams in the Willamette Subbasin 4,751,308 yds 2 spawning habitat lost

8 5th Field Approach - Highest Priority First Evaluate each barrier in relationship to obtaining access to core areas of productive habitat

9 USFS Measurements of Surrogates Indicative of Hydraulic Conditions

10 Integration of Existing Data Critical Component Concept Stream slope Culvert slope Bankfull width & velocity Jump Flow & water depth Culvert size & condition Habitat quality

11 Prioritization Methodology Barrier Analysis Corridor Analysis Transportation Factors

12 Effects Summary Share information Biggest bang for our environmental buck Improve habitat Useable for private property information

13 If We Do Nothing Projects selected based on transportation system needs Greatly reduced gain in accessible habitat

14 Questions?


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