Fish Passage Site 20401340

Coordinates (dec. deg.): 61.64674°, -149.19020°
Legal Description: S018N001E13
Region: South Central
Road Name: Bonnie Drive

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

Elevation:

Site Comments: Wasilla Creek tributary upstream of Wight Lake

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-WA033

Observers: Edward Weiss, Olof Jacobsson, Mike Roy

Overall Fish Passage Rating:

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 40.0
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: Sand
Outlet Substrate: Cobble
InletOutlet
Width(ft):3.9 4.0
Height(ft):3.75 3.8
Apron Length(ft):
Water Depth(ft):0.7 0.54
Rustline Height(ft):
Substrate Depth(ft):0.25 0.2
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.65
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Structural Problem
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandCobble
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 56.0 5.00
Downstream ordinary high water 90.0 5.00
Upstream ordinary high water 52.0 6.00
Upstream ordinary high water 72.0 6.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 92.88
Inlet Culvert Top 1 93.52
D/S Thalweg 0.00 90.0 86.30
D/S Thalweg 34.00 56.0 86.27
Outlet Invert 1 90.00 0.0 89.01
Outlet Thalweg 1 90.00 0.0 89.48
Road Elev 110.00 95.52
Road Elev 110.00 95.76
Inlet Thalweg 1 130.00 0.0 89.81
U/S Thalweg 182.00 52.0 89.69
U/S Thalweg 202.00 72.0 90.81

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): 18
Comments: Perched culvert.

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 55 Max: 55 Mean: 55
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  

Photos

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