Winter Steelhead Recruit per Spawner

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Winter Steelhead Recruit per Spawner

• Hal Michael
• Salmonid Ecosystem Ecologist
• ucd880_at_comcast.net
• 360-459-4005

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STREAMS EVALUATED

• Waddell Creek, CA.
• Snow Creek, WA
• Buckley Trap, White River WA

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R/S FOR FIRST TIME SPAWNERS

• SYSTEM n R/S ALL VIRGINS
  R/S 4SNOW 24 0.963
  1.184
• SNOW-NO BAD 16 0.707
  1.031 SNOW-ALL INCL 30 1.004 1.006
• WADDELL 5 0.700
  0.821WHITE 15 0.580 0.828

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R/S FOR FIRST TIME SPAWNERS

• SYSTEM n R/S gt 1.00
• SNOW 24 5
• SNOW-NO BAD 16 4
• WADDELL 5 0
• WHITE 15 3
• At best, 7 out of 44 gt 1.00 for the return of
  virgins
• SNOW-ALL INCL 30 12

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AGE COMPOSITION OF ADULTS TO FIRST RETURN

• Age
• 2 3 4 5 6
• Snow 0.000 0.067 0.736 0.191 0.006
• White 0.004 0.094 0.494 0.447 0.052

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