Fish Passage Site 20401274

Coordinates (dec. deg.): 61.62593°, -149.31238°
Legal Description: S018N001E29
Region: South Central
Road Name: Driveway

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Wolf Lake outlet stream

Elevation:

Site Comments: Culvert located on remote drive located N. of end of N. Caribou St.

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-CT117

Observers: Edward Weiss, Doug Hill, Joe Conner

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Constriction ratio red

Comments: Upstream and Downstream Substrate Type includes Fine Gravel (secondary)

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft): 24.0
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: Sand
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft):0.5 0.9
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.32
Culvert Gradient: 3.21%
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:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 44.0 7.40
Downstream ordinary high water 80.0 4.20
Upstream ordinary high water 50.0 6.30
Upstream ordinary high water 100.0 6.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 92.26
Inlet Culvert Top 1 93.03
D/S Thalweg 0.00 80.0 87.45
D/S Thalweg 36.00 44.0 89.17
Outlet Invert 1 80.00 0.0 90.27
Outlet Thalweg 1 80.00 0.0 90.70
Road Elev 92.00 95.00
Road Elev 92.00 95.22
Inlet Culvert Invert 1 104.00 0.0 91.15
Inlet Thalweg 1 104.00 0.0 91.15
U/S Thalweg 1 104.40 0.4 91.32
U/S Thalweg 154.00 50.0 92.10
U/S Thalweg 204.00 100.0 93.92

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)
 
Gear Type: Minnow Trap (B)

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 4 Fish Measured: 3 Fork Lengths (mm) Min: 86 Max: 92 Mean: 89
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (2)  
Comments: Visual Observation - 1 DV observed at lower trap site prior to set

Photos

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