biological considerations at fish passage projects in the missoula area
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Biological considerations at fish passage projects in the Missoula area. Pat Saffel FWP Fish Manager Missoula. This Presentation sort of a “welcoming”. Diverse examples of projects around Missoula B iological considerations Assessments One fish screen project

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biological considerations at fish passage projects in the missoula area

Biological considerations at fish passage projects in the Missoula area

Pat Saffel

FWP Fish Manager

Missoula

this presentation sort of a welcoming
This Presentationsort of a “welcoming”
  • Diverse examples of projects around Missoula
    • Biological considerations
    • Assessments
  • One fish screen project
    • Complex up and downstream passage
  • Three upstream fish passage projects
    • Hydro dam, low-head dam & diversion
  • Wrap up with general themes, sneak in a video?
this presentation sort of a welcoming1
This Presentationsort of a “welcoming”
  • Diverse examples of projects around Missoula
    • Biological considerations
    • Assessments
  • One fish screen project
    • Complex up and downstream passage
  • Three upstream fish passage projects
    • Hydro dam, low-head dam & diversion
  • Wrap up with general themes, sneak in a video?
this presentation sort of a welcoming2
This Presentationsort of a “welcoming”
  • Diverse examples of projects around Missoula
    • Biological considerations
    • Assessments
  • One fish screen project
    • Complex up and downstream passage
  • Three upstream fish passage projects
    • Hydro dam, low-head dam & diversion
  • Wrap up with general themes, sneak in a video?
questions with fish screens
Questions with Fish Screens
  • Is a fish in the stream better than one in the ditch?
    • Usually, but how much better?
    • Worth the cost?
ef rock creek fish screen
EF Rock Creek Fish Screen

Atrophied channel

5 cfs summer flow

200 cfs capacity

$700,000

Irrigation season: May – Sep

Outflow: seepage - 200+ cfs

biological considerations
Biological Considerations
  • Reservoir population
  • Canal salvage history
  • EF Rock Cr. fish populations & habitat
  • Return spawners
biological considerations1
Biological Considerations
  • Reservoir population
  • Canal salvage history
  • EF Rock Cr. fish populations & habitat
  • Return spawners
biological considerations2
Biological Considerations
  • Reservoir population
  • Canal salvage history
  • EF Rock Cr. fish populations & habitat
  • Return spawners
biological considerations3
Biological Considerations
  • Reservoir population
  • Canal salvage history
  • EF Rock Cr. fish populations & habitat
  • Return spawners
monitoring at ef rock creek
Monitoring at EF Rock Creek
  • Hopefully answer how much better a fish in the creek is than one in the ditch – after the fact…
  • Trap & mark fish that are screened
    • How many fish are put back into the creek?
  • Trap returning adults
    • How many fish screened return as adults?
    • Move above dam?
monitoring at ef rock creek1
Monitoring at EF Rock Creek
  • Hopefully answer how much better a fish in the creek is than one in the ditch – after the fact…
  • Trap & mark fish that are screened
    • How many fish are put back into the creek?
  • Trap returning adults
    • How many fish screened return as adults?
    • Move above dam?
slide14

Traps

Downstream

Upstream

questions with upstream passage
Questions with Upstream Passage
  • How many fish are being impeded?
  • Where do they want to go?
    • Are you passing fish to the correct location\population?
    • Will they survive?
  • What kind of passage?
    • Volitional or selective
    • Passage structures
questions with upstream passage1
Questions with Upstream Passage
  • How many fish are being impeded?
  • Where do they want to go?
    • Are you passing fish to the correct location\population?
    • Will they survive?
  • What kind of passage?
    • Volitional or selective
    • Passage structures
questions with upstream passage2
Questions with Upstream Passage
  • How many fish are being impeded?
  • Where do they want to go?
    • Are you passing fish to the correct location\population?
    • Will they survive?
  • What kind of passage?
    • Volitional or selective
    • Passage structures
slide23

Clark Fork R.

Radial Gate

Blackfoot R.

biological considerations4
Biological Considerations
  • Both creeks could be contributing bull trout to Silver Lake, with adults wanting to return
  • What is the origin of bull trout in Silver Lake?
    • Prioritize passage efforts between the two creeks
slide31

Silver Lake/Storm Lake Creek Bull Trout Passage Project

  • In 2012: Tagged/ moved 8 adults (and 13 sub-adults)
    • At least 7 adults moved upstream
    • Large reddsfound
  • Manual passage for now - hybridization concerns with rainbow
slide32

Lake Inez Fish Barrier (aka, Emily-A Dam)

  • West Fork Clearwater
    • Had ~ 30 redds
  • Emily-A Dam
    • Migration route blocked

Emily-A Dam

slide33

Lake Inez Fish Barrier (aka, Emily-A Dam)

  • Many radio-tagged fish went to WF Clearwater

Emily-A Dam

general themes
General Themes
  • Many factors reduce numbers of fish (e.g., EF Rock Creek), understanding the biology improves a project’s chance of success (e.g., Silver Lake)
  • The fewer life-stages and habitat problems involved the more likely to succeed (e.g., upstream passage of adults vs. downstream passage of juveniles).
  • Passage to suitable biological and physical habitat can be very successful (e.g., Emily-A Dam).
  • More information is needed to understand what affects a project’s effectiveness (e.g., fish screen projects).
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