Fish Passage Site 20401326

Coordinates (dec. deg.): 61.59935°, -149.25107°
Legal Description: S017N001E03
Region: South Central
Road Name: Palmer Wasilla Highway

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

Elevation:

Site Comments: ATV Crossing through outlet pool area.

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-WA018

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: ATV Crossing through outlet pool area.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Gray
 
Length(ft): 91.0
Inlet Type: Headwall
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):10.0 10.0
Height(ft):10.0 10.0
Apron Length(ft):
Water Depth(ft):1.1 1.0
Rustline Height(ft):
Substrate Depth(ft):2.0 2.6
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.87
Culvert Gradient: -0.12%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Mechanical damage or joints parting
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Gray
 
Length(ft): 91.0
Inlet Type: Headwall
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):10.0 10.0
Height(ft):10.0 10.0
Apron Length(ft):
Water Depth(ft):1.0 1.1
Rustline Height(ft):
Substrate Depth(ft):2.2 2.5
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.87
Culvert Gradient: 0.13%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 86.0 23.00
Downstream ordinary high water 111.0 23.00
Upstream ordinary high water 50.0 23.00
Upstream ordinary high water 112.0 23.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 90.03
Outlet Culvert Top 2 90.42
Inlet Culvert Top 1 90.62
Inlet Culvert Top 2 90.78
D/S Thalweg 0.00 111.0 81.29
D/S Thalweg 25.00 86.0 81.87
D/S Tailcrest or 1st Thalweg 75.00 36.0 82.96
D/S Thalweg 93.00 18.0 82.55
OHW Left Bank 103.00 8.0 82.92
Outlet Invert 2 111.00 0.0 82.77
Outlet Invert 1 111.00 0.0 82.78
Road Elev 156.50 92.42
Road Elev 156.50 94.15
Inlet Thalweg 2 202.00 0.0 83.32
Inlet Culvert Invert 2 202.00 0.0 82.89
Inlet Culvert Invert 1 202.00 0.0 82.67
U/S Thalweg 2 205.00 3.0 83.18
U/S Thalweg 252.00 50.0 83.17
U/S Thalweg 314.00 112.0 82.25

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): 3
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2
 
Gear Type: Visual Observation, Ground (C)
Comments: No numbers provided on data sheet

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 42 Fish Measured: 20 Fork Lengths (mm) Min: 38 Max: 68 Mean: 53
Collected/Observed by Gear Type: Downstream Minnow Trap (22)  Upstream Minnow Trap (20)  

Photos

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