Fish Passage Site 20401361

Coordinates (dec. deg.): 61.56716°, -149.31146°
Legal Description: S017N001E17
Region: South Central
Road Name: Parks Highway

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019-3038
Stream Name: Wasilla Creek tributary

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-WA081

Observers: Edward Weiss, Olof Jacobsson

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Maybe

Step Pools:
Construction Year:


Comments: Site Cond=OTH=channeled drainage upstrm & dwnstrm/culvert upstream under feed store lot

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 79.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):2.0 2.0
Height(ft):1.8 2.0
Apron Length(ft):
Water Depth(ft):0.8 0.55
Rustline Height(ft):
Substrate Depth(ft):0.2 0.0
Backwatered?: Maybe
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 0.47
Culvert Gradient: -0.28%
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 4.5 6.20
Downstream ordinary high water 140.0 17.00
Upstream ordinary high water 1.0 4.50
Upstream ordinary high water 50.0 4.00
Upstream ordinary high water 105.0 4.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Thalweg 86.49
Inlet Culvert Top 1 88.06
Outlet Culvert Top 1 88.50
D/S Thalweg 0.00 140.0 85.74
D/S Thalweg 90.00 50.0 85.89
D/S Tailcrest or 1st Thalweg 135.50 4.5 86.54
OHW Left Bank 136.00 4.0 86.14
D/S Thalweg 137.80 2.2 86.00
Outlet Invert 1 140.00 0.0 86.50
Outlet Thalweg 1 140.00 0.0 86.27
Road Elev 179.50 95.85
Road Elev 179.50 98.08
Inlet Culvert Invert 1 219.00 0.0 86.28
Inlet Thalweg 1 219.00 0.0 86.28
U/S Thalweg 1 220.00 1.0 86.28
U/S Thalweg 324.00 105.0 86.45

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): 20
Comments: Set in inlet.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 20
Comments: Slow water set.

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 4 Fish Measured: 2 Fork Lengths (mm) Min: 137 Max: 138 Mean: 137
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (2)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 26 Fish Measured: 11 Fork Lengths (mm) Min: 64 Max: 119 Mean: 92
Collected/Observed by Gear Type: Downstream Minnow Trap (24)  Upstream Minnow Trap (2)  
 
Species: juvenile/adult sculpin-unspecified Life History: Resident
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 86 Max: 86 Mean: 86
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

Photos

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