Hawley Creek - Upper Salmon Basin Watershed Program
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HAWLEY CREEK Pre and Post Treatment Stacey Feeken
Transcript of Hawley Creek - Upper Salmon Basin Watershed Program
HAWLEY CREEKPre and Post Treatment
Stacey Feeken
Hawley Creek
Hawley Creek Restoration Flow Physical Barriers Instream Habitat
Photos: Jeff Diluccia
• Multiple Barriers Removed or Modified
Hawley Creek
BDAs • BDAs installed in 2018
• 5 BDAs
Photos: Daniel Bertram
Research Objectives
• What is the abundance and composition of species in Hawley Creek?
• Describe non target (Brook Trout) response to BDAs (pre and post treatment)
• Describe target (steelhead) response to BDAs (pre and post treatment)
Sampling
• Mark-recapture electrofishing
Start
Stop
Hawley Creek Species Composition
0
0.2
0.4
0.6
0.8
1
Brook Trout Cutthroat Bull Trout Steelhead
2016
0
0.2
0.4
0.6
0.8
1
Brook Trout Cutthroat Bull Trout Steelhead
2017
0
0.2
0.4
0.6
0.8
1
Brook Trout Cutthroat Bull Trout Steelhead
2018
0
0.2
0.4
0.6
0.8
1
Brook Trout Cutthroat Bull Trout Steelhead
2019
Pro
po
rtio
n
Species
Brook Trout
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
2016 2017 2018 2019
Ave
rag
e d
ensi
ty (f
ish
/m)
Year
Hawley Creek
BDAs
PostPre
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
2016 2017 2018 2019
Ave
rag
e d
ensi
ty (f
ish
/m)
Year
Hawley Creek
BDAs
Pre
Steelhead
Post
Species Composition - BDAs 2016
Brook Tout Steelhead
2017
Brook Tout Steelhead
2018
Brook Tout Steelhead
2019
Brook Tout Steelhead
17%
83%
21%
79%
59%
41%
34%
66%
Conclusions
• Hawley Creek is dominated by steelhead
• Brook Trout and steelhead densities have increased in the creek and in BDAs
• Steelhead densities are greater than Brook Trout densities in BDAs• Steelhead and Brook trout densities increased substantially post
treatment in BDA locations
• Brook Trout densities increased at a faster rate
• BDAs provide good habitat
• Greater proportion of Brook Trout in BDAs in 2018.
Next Steps
• Increase in species abundance?
• Species movement and distribution?
• Factors to consider:• Trout move short distances during summer (50-100m)
• Vacated habitats will be colonized by new cohorts
• Timeline (>5 years to observe increases in survival and abundance)
• Other habitat projects
Future Direction
• Solutions and methods• Continue to collect data and PIT-tag fish
• Control reach
• Temporary PIT arrays
• Standardize sampling
Questions
