BPA Proposal 31019

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BPA Proposal 31019

• Fish Passage Assessment Prioritization Program
• Washington County Land Use Transportation
• Greg Miller, P.E., Operations Manager
• Principal
• Investigator
• Janet Oatney

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Scope of the Problem
ODFW evaluated 69 of approximately 3000 existing
culverts
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Typical Washington Co. Culverts
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Consistent Limiting Factors

• Watershed
• Subbasin
• Province
• Basin

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Relationship to Hydro System

• 24 Dams in the Willamette Subbasin
• 4,751,308 yds2 spawning habitat lost

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5th Field Approach - Highest Priority First

• Evaluate each barrier in relationship to
  obtaining access to core areas of productive
  habitat

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USFS Measurements of Surrogates Indicative of
Hydraulic Conditions
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Integration of Existing DataCritical Component
Concept

• Stream slope
• Culvert slope
• Bankfull width velocity
• Jump
• Flow water depth
• Culvert size condition
• Habitat quality

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Prioritization Methodology
Project List
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Effects Summary

• Share information
• Biggest bang for our
• environmental buck
• Improve habitat
• Useable for private property
• information

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If We Do Nothing

• Projects selected based on transportation system
  needs
• Greatly reduced gain in accessible habitat

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Questions?