Fish Passage Site 20401337

Coordinates (dec. deg.): 61.64328°, -149.19794°
Legal Description: S018N001E13
Region: South Central
Road Name: Fishhook Road

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019
Stream Name: Wasilla Creek

Elevation:

Site Comments: None

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey MSCS1-WA030

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating:

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Local resident commented that no adult kings observed this year. Large outlet pool exacerbated by recreational activity and ATV crossing.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 71.0
Inlet Type: Headwall
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):5.8 5.8
Height(ft):6.2 6.2
Apron Length(ft):
Water Depth(ft):1.1 1.05
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio:
Culvert Gradient: 0.93%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Improper bedding
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 71.0
Inlet Type: Headwall
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):5.7 5.85
Height(ft):6.15 6.15
Apron Length(ft):
Water Depth(ft):1.0 0.7
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.64
Culvert Gradient: 0.65%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Improper bedding

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 67.0 19.00
Downstream ordinary high water 100.0 22.00
Upstream ordinary high water 50.0 18.00
Upstream ordinary high water 80.0 18.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 81.88
OHW Left Bank (Edited by SWA 11/16/06 Original data entry incorrect) 81.99
D/S Thalweg 82.50
D/S Tailcrest or 1st Thalweg 82.84
U/S Thalweg 82.85
U/S Thalweg 83.68
Outlet Culvert Top 1 88.17
Outlet Culvert Top 2 88.75
Inlet Culvert Top 1 88.96
Inlet Culvert Top 2 89.32
Outlet Invert 2 0.00 0.0 82.62
Outlet Thalweg 1 0.00 0.0 80.57
Outlet Thalweg 2 0.00 0.0 80.57
Outlet Invert 1 0.00 0.0 82.09
Road Elev 35.50 94.86
Inlet Culvert Invert 1 71.00 0.0 82.75
Inlet Culvert Invert 2 71.00 0.0 83.08
Inlet Thalweg 1 71.00 0.0 82.46
Inlet Thalweg 2 71.00 0.0 82.61

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. Measured from each end of the crossing along the thalweg of the stream.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): 1
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1

Fish Observations

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 4 Fish Measured: 2 Fork Lengths (mm) Min: 110 Max: 118 Mean: 114
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (2)  
Comments: Local resident commented that no kings were observed this year.
 
Species: juvenile Chinook salmon Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 3 Fork Lengths (mm) Min: 65 Max: 65 Mean: 65
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 3 Fork Lengths (mm) Min: 54 Max: 54 Mean: 54
Collected/Observed by Gear Type: Downstream Minnow Trap (4)  Upstream Minnow Trap (2)  

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