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 Presentation Missoula areasort 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 Presentation Missoula areasort 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 Presentation Missoula areasort 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 Missoula area

  • 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 Missoula area

Atrophied channel

5 cfs summer flow

200 cfs capacity

$700,000

Irrigation season: May – Sep

Outflow: seepage - 200+ cfs


Biological considerations
Biological Missoula areaConsiderations

  • Reservoir population

  • Canal salvage history

  • EF Rock Cr. fish populations & habitat

  • Return spawners


Biological considerations1
Biological Missoula areaConsiderations

  • Reservoir population

  • Canal salvage history

  • EF Rock Cr. fish populations & habitat

  • Return spawners


Biological considerations2
Biological Missoula areaConsiderations

  • Reservoir population

  • Canal salvage history

  • EF Rock Cr. fish populations & habitat

  • Return spawners


Biological considerations3
Biological Missoula areaConsiderations

  • Reservoir population

  • Canal salvage history

  • EF Rock Cr. fish populations & habitat

  • Return spawners


Monitoring at ef rock creek
Monitoring at EF Rock Creek Missoula area

  • 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 Missoula area

  • 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?


Traps Missoula area

Downstream

Upstream


Questions with upstream passage
Questions with Upstream Passage Missoula area

  • 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 Missoula area

  • 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 Missoula area

  • 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


Milltown Dam Missoula area



Clark Fork R. Missoula area

Radial Gate

Blackfoot R.


Two ladders
Two Missoula areaLadders?


Silver lake system
Silver Lake System Missoula area

Silver Lake


DeHaan et al. 2009 Missoula area


DeHaan et al. 2009 Missoula area


DeHaan et al. 2009 Missoula area


Biological considerations4
Biological Considerations Missoula area

  • 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


DeHaan et al. 2009 Missoula area


Silver Lake/Storm Lake Creek Missoula areaBull 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


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

  • West Fork Clearwater

    • Had ~ 30 redds

  • Emily-A Dam

    • Migration route blocked

Emily-A Dam


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

  • Many radio-tagged fish went to WF Clearwater

Emily-A Dam



Restoring migration
Restoring Migration Missoula area

VIDEO


General themes
General Themes Missoula area

  • 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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