Calapooia River Flow Acquisition and Passage Assessment

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Calapooia River Flow Acquisition and Passage
Assessment
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Calapooia fish resources

• Winter steelhead
• Spring chinook
• Cutthroat trout
• Pacific lamprey
• Etc.

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The Calapooia River Basin
Willamette River
Oak Creek
Butte Creek
Courtney Creek
Calapooia River
North Fork (RM 70)
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Thompsons Mills

• Fish passage
• Seasonal flow diversions
• Long standing issue
• Multi-agency working group

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Sodom Dam and fishway
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Sodom Ditch above Sodom Dam
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Sodom Ditch at B Mill Rd
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Calapooia above Linn West Rd
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Shear Dam
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Proposal components

• Non-generation reimbursement
• Evaluate effect of flow manipulation
• Fishway trapping
• PB sampling
• 2 year effort investigation of permanent
  solution ongoing

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Past accomplishments 1999

• Trapped Sodom and Shear Dam fishways
• Migration timing, passage conditions, channel
  selection, etc.
• Sodom Ditch surveys

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1999 monitoring Sodom fishway and Ditch

• Trapped winter steelhead only
• Winter steelhead delayed below Sodom Dam
• Poor attraction to fishway entrance and false
  attraction to dam

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Sodom Dam and fishway
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1999 monitoring Sodom Dam and Ditch

• Steelhead spawning below Dam
• Spring chinook delayed
• Flashboards installed late June
• Adult chinook stranded, salvaged
• Steelhead redds de-watered

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Sodom Dam fishway, 10/08/01
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Spring chinook salvage at Thompsons Mills
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2001

• Multi-agency working group
• Non-generation agreement
• Oregon Water Trust funded
• Provide optimum adult passage conditions through
  July
• Monitoring

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2001 Observations adult passage

• Passage conditions appeared satisfactory
• False attraction at Mill eliminated
• No chinook stranding observed

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Calapooia River below mill
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Calapooia River Snorkel Survey Counts of Adult
Spring Chinook
Adults stocked prior to survey
Adult Chinook
Year
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Future Studies adult passage

• Fishway trapping ...
• Migration timing, route selection, passage
  conditions
• Fishway assessment ongoing
• Habitat surveys Calapooia channel

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Summer Flow Management 2001

• Non-generation arrangement extended through
  September
• Additional learning opportunities
• Physical and biological responses at low flows

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Potential benefits of providing summer flows ...

• Salmonid rearing
• Lamprey juvenile and adult
• Ecological maintenance

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Red Legged Frog in Sodom Ditch
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Monitoring ... Sodom Ditch summer, 2001

• Steelhead fry through late July only
• Parr in fishway through summer
• Lamprey, etc.
• Flow/temperature influence?

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Steelhead parr in Sodom fishway
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Steelhead parr in Sodom fishway
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Summer 2001 Assessment Sodom Ditch

• Limiting factor excessive temperatures
• Limited potential for improving temperatures
• Fate of juvenile steelhead?
• Lamprey, etc.

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Monitoring Calapooia channel

• Limited
• No salmonids
• Lamprey, etc.
• Flow/temperature

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Summer 2001 Assessment Calapooia channel

• More favorable temperature regimes
• Salmonid rearing potential?
• Ecological benefits lower Calapooia ?

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Future Actions summer monitoring

• Increase/expand fish sampling effort
• Flow-temperature analyses
• Goals
• validate assumptions
• refine flow management strategies

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