Fish Passage Site 20301007

Coordinates (dec. deg.): 60.53530°, -151.21129°
Legal Description: S005N011W09
Region: South Central
Road Name: Bridge Access Road

Datum: NAD83
Quad Name / ITM: Kenai C-4
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: 200 M. north of viewing platform.

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-NK079

Observers: Cecil Rich, Jeff Davis, James Maple, Tom Sigurdsson

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: 200 M. north of viewing platform. Inlet pipe seperated at flare, eroding around pipe. Flares have rusted and falling apart at outlet, Inlet OK. Retorfit outlet ext. & apron inlet apron rusted through and separted CMP. Observed dead coho fry 100' US.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 109.5
Inlet Type: Flared Inlet
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: None
InletOutlet
Width(ft):4.5 5.4
Height(ft):3.02 3.48
Apron Length(ft):
Water Depth(ft):0.27 0.75
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.08
Outfall Type:
Constriction Ratio: 1.27
Culvert Gradient: 0.74%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Other, including vibrations, cavitation, etc.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelSilt/Clay
Subdominant:Silt/ClayNone
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 17.0 6.50
Downstream ordinary high water 52.0 2.40
Downstream ordinary high water 100.0 2.00
Upstream ordinary high water 5.0 8.90
Upstream ordinary high water 50.0 4.30
Upstream ordinary high water 100.0 2.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev 0.00 100.0 84.08
D/S OHW Elev 0.00 100.0 84.56
D/S Thalweg 0.00 100.0 83.46
D/S OHW Elev 48.00 52.0 85.02
D/S Thalweg 48.00 52.0 84.17
D/S Water Surface Elev 48.00 52.0 84.31
D/S Tailcrest or 1st Thalweg 83.00 17.0 85.42
D/S Water Surface Elev 83.00 17.0 86.85
OHW Left Bank 83.00 17.0 87.13
OHW Left Bank 91.30 8.7 86.98
OHW Left Bank 95.00 5.0 86.85
D/S Thalweg 95.00 5.0 83.56
Max Pool Depth 95.00 5.0 84.44
Outlet Invert 1 100.00 0.0 86.02
Outlet Thalweg 1 100.00 0.0 86.02
Outlet Rustline Height 1 100.00 0.0 87.12
Outlet Culvert Top 1 100.00 0.0 89.50
Road Elev 154.50 96.69
Road Elev 154.50 96.71
Inlet Culvert Top 1 209.00 0.0 89.85
Inlet Rustline Height 1 209.00 0.0 88.25
Inlet Culvert Invert 1 209.00 0.0 86.83
Inlet Thalweg 1 209.00 0.0 86.83
U/S Thalweg 1 210.00 1.0 86.29
U/S Thalweg 1 214.00 5.0 85.94
U/S OHW elevation 1 214.00 5.0 87.25
U/S Water Surface Elev 1 214.00 5.0 87.12
U/S Thalweg 1 218.90 9.9 85.73
U/S Thalweg 259.00 50.0 84.35
U/S Headwater 259.00 50.0 87.25
U/S Water Surface Elev 259.00 50.0 87.10
U/S Headwater 309.00 100.0 87.33
U/S Water Surface Elev 309.00 100.0 87.08
U/S Thalweg 309.00 100.0 84.06

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): 2.03
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.08

Fish Observations

Species: juvenile Chinook salmon Life History: Anadromous
Total Fish Observed: 12 Fish Measured: 6 Fork Lengths (mm) Min: 55 Max: 95 Mean: 73
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  Upstream Minnow Trap (6)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 60 Fish Measured: 17 Fork Lengths (mm) Min: 50 Max: 99 Mean: 64
Collected/Observed by Gear Type: Downstream Minnow Trap (46)  Upstream Minnow Trap (14)  

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