Fish Passage Site 20401347

Coordinates (dec. deg.): 61.72003°, -149.11873°
Legal Description: S019N002E20
Region: South Central
Road Name: ATV Trail

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #:
Stream Name: Wasilla Creek tributary

Elevation:

Site Comments: Trib to Wasilla Ck. ATV trail off of Murphy Road.

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-WA043

Observers: Edward Weiss, Olof Jacobsson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Water running around and under pipe at the inlet. Top of road also had a divet as if losing material. Perched inlet and outlet. Pipe partially squashed.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft):
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.1 3.6
Height(ft):4.0 3.9
Apron Length(ft):
Water Depth(ft):0.5 0.3
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.44
Culvert Gradient:
Max Slope:
Max Slope Length:

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 50.0 7.00
Upstream ordinary high water 35.0 7.50
Upstream ordinary high water 75.0 11.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 80.0 86.81
D/S Thalweg 50.0 87.33
Max Pool Depth 1.5 87.68
OHW Left Bank 2.7 87.96
D/S Thalweg 13.0 88.42
Outlet Thalweg 1 0.0 88.48
D/S Tailcrest or 1st Thalweg 5.5 89.02
U/S Thalweg 1 89.03
Outlet Invert 1 0.0 89.49
Inlet Culvert Invert 1 0.0 90.04
Inlet Thalweg 1 0.0 90.09
U/S Thalweg 1 3.0 90.48
U/S Thalweg 35.0 91.86
Outlet Culvert Top 1 93.44
Inlet Culvert Top 1 94.00
U/S Thalweg 75.0 94.50
Road Elev 95.25
Road Elev 95.25

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): 2
 
Gear Type: Minnow Trap (B) Trap Duration(h): 18

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 14 Fish Measured: 7 Fork Lengths (mm) Min: 89 Max: 148 Mean: 115
Collected/Observed by Gear Type: Downstream Minnow Trap (8)  Upstream Minnow Trap (6)  

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