Fish Passage Site 20301005

Coordinates (dec. deg.): 60.73149°, -150.74153°
Legal Description: S007N008W06
Region: South Central
Road Name: Swan Lake Road

Datum: NAD83
Quad Name / ITM: Kenai C-2
AWC Stream #: 247-90-10020-2056
Stream Name: Unnamed

Elevation:

Site Comments: Wetland above crossing, channel below feeding Swanson River.

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 KPCS1-NK064

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Current culvert is adjacent to old squashed non-functional one. Newer one is bowed in middle but still functional. Wetland above crossing, channel below feeding Swanson River.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 49.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.7 3.6
Height(ft):4.42 4.34
Apron Length(ft):
Water Depth(ft):0.29 0.25
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.33
Outfall Type:
Constriction Ratio:
Culvert Gradient: 2.04%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayCobble
Subdominant:NoneGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 7.8 5.10
Downstream ordinary high water 50.0 5.70
Downstream ordinary high water 100.0 8.00
Upstream ordinary high water 5.0 6.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 100.0 92.69
D/S Water Surface Elev 0.00 100.0 93.37
D/S OHW Elev 0.00 100.0 93.67
D/S Thalweg 50.00 50.0 94.21
D/S Water Surface Elev 50.00 50.0 94.35
D/S OHW Elev 50.00 50.0 94.85
D/S Tailcrest or 1st Thalweg 92.20 7.8 95.27
D/S Water Surface Elev 92.20 7.8 95.46
OHW Left Bank 92.20 7.8 96.05
OHW Left Bank 95.00 5.0 96.42
OHW Left Bank 95.00 5.0 95.48
Max Pool Depth 95.00 5.0 94.79
D/S Thalweg 95.00 5.0 94.79
Outlet Invert 1 100.00 0.0 95.56
Outlet Thalweg 1 100.00 0.0 95.56
Outlet Rustline Height 1 100.00 0.0 96.50
Outlet Culvert Top 1 100.00 0.0 99.90
Road Elev 124.50 103.75
Road Elev 124.50 104.23
Inlet Rustline Height 1 149.00 0.0 97.48
Inlet Culvert Top 1 149.00 0.0 100.98
Inlet Culvert Invert 1 149.00 0.0 96.56
Inlet Thalweg 1 149.00 0.0 96.56
U/S Thalweg 1 150.00 1.0 96.21
U/S Thalweg 1 154.00 5.0 96.21
U/S Water Surface Elev 1 154.00 5.0 96.90
U/S OHW elevation 1 154.00 5.0 97.44
U/S Thalweg 1 156.40 7.4 95.98

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): 1.1
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.05

Fish Observations

Species: adult stickleback-unspecified Life History: Resident
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 16 Fish Measured: 8 Fork Lengths (mm) Min: 83 Max: 132 Mean: 105
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (14)  

Photos

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