Fish Passage Site 20401352

Coordinates (dec. deg.): 61.57486°, -149.29478°
Legal Description: S017N001E09
Region: South Central
Road Name: Hyer Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
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-WA049

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools:
Construction Year:


Comments: Fine sands in road fill exposed at crossing running downhill into stream with rains.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 46.0
Inlet Type: Projecting
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):10.0 10.0
Height(ft):7.0 7.0
Apron Length(ft):
Water Depth(ft):1.4 1.6
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 0.47
Culvert Gradient: 0.15%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 60.0 21.00
Downstream ordinary high water 105.0 23.00
Upstream ordinary high water 50.0 25.00
Upstream ordinary high water 90.0 18.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 93.03
Inlet Culvert Top 1 93.36
U/S Thalweg 86.72
U/S Thalweg 86.97
D/S Thalweg 0.00 105.0 85.27
D/S Thalweg 45.00 60.0 86.11
D/S Tailcrest or 1st Thalweg 92.00 13.0 87.14
OHW Left Bank 96.00 9.0 86.61
D/S Thalweg 103.00 2.0 86.24
Outlet Invert 1 105.00 0.0 86.09
Outlet Thalweg 1 105.00 0.0 86.09
Road Elev 128.00 93.86
Road Elev 128.00 -12.0 94.97
Inlet Culvert Invert 1 151.00 0.0 86.16
Inlet Thalweg 1 152.00 1.0 86.13
U/S Thalweg 1 159.00 8.0 85.94

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: Visual Observation, Ground (C)
 
Gear Type: Visual Observation, Ground (D)

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Visual Observation, Ground ()  
 
Species: adult chum salmon Life History: Anadromous
Total Fish Observed: Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Visual Observation, Ground ()  Upstream Visual Observation, Ground ()  
Comments: Adult chum salmon observed
 
Species: juvenile/adult chum salmon Life History: Unknown
Total Fish Observed: Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Visual Observation, Ground ()  

Photos

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