Fish Passage Site 20301024

Coordinates (dec. deg.): 60.01066°, -151.52531°
Legal Description: S002S013W09
Region: South Central
Road Name: Oil Well Road

Datum: NAD83
Quad Name / ITM: Kenai A-5
AWC Stream #: 244-20-10100-2019
Stream Name: Silver Salmon

Elevation:

Site Comments: None

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-SK033

Observers: Cecil Rich, Michael Lund, Doug Hill

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Pipe damage at inlet. Erosion on both sides squashed gabions falling apart.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 71.71
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):4.9 4.6
Height(ft):3.35 4.54
Apron Length(ft):
Water Depth(ft):1.4 1.42
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.25
Outfall Type:
Constriction Ratio: 0.42
Culvert Gradient: 1.69%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:NoneCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 34.0 25.50
Downstream ordinary high water 91.0 10.20
Downstream ordinary high water 174.0 15.00
Upstream ordinary high water 5.0 15.00
Upstream ordinary high water 89.0 11.50
Upstream ordinary high water 200.0 11.75

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 87.65
D/S Thalweg 0.00 174.0 88.06
D/S Water Surface Elev 0.00 174.0 90.42
D/S OHW Elev 0.00 174.0 90.85
D/S Water Surface Elev 83.00 91.0 91.06
D/S Thalweg 83.00 91.0 89.79
D/S OHW Elev 83.00 91.0 91.48
D/S Water Surface Elev 137.00 37.0 91.48
OHW Left Bank 137.00 37.0 91.39
D/S Tailcrest or 1st Thalweg 137.00 37.0 90.35
OHW Left Bank 169.00 5.0 91.40
Max Pool Depth 169.00 5.0 89.04
OHW Left Bank 169.00 5.0 91.92
Outlet Rustline Height 1 174.00 0.0 91.77
Outlet Culvert Top 1 174.00 0.0 94.77
Outlet Thalweg 1 174.00 0.0 90.06
Outlet Invert 1 174.00 0.0 90.23
Road Elev 209.50 108.27
Road Elev 209.50 108.62
Inlet Culvert Top 1 245.00 0.0 94.79
Inlet Rustline Height 1 245.00 0.0 93.15
Inlet Thalweg 1 245.00 0.0 90.98
Inlet Culvert Invert 1 245.00 0.0 91.44
U/S Thalweg 1 246.00 1.0 91.21
U/S Thalweg 1 250.00 5.0 91.40
U/S Water Surface Elev 1 250.00 5.0 93.09
U/S OHW elevation 1 250.00 5.0 94.06
U/S Thalweg 1 254.80 9.8 91.09
U/S Thalweg 334.00 89.0 91.09
U/S Water Surface Elev 334.00 89.0 93.13
U/S Headwater 334.00 89.0 93.75
U/S Headwater 445.00 200.0 94.06
U/S Water Surface Elev 445.00 200.0 93.17
U/S Thalweg 445.00 200.0 91.44

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): 2.05
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.25

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 47 Fish Measured: 20 Fork Lengths (mm) Min: 62 Max: 115 Mean: 79
Collected/Observed by Gear Type: Downstream Minnow Trap (26)  Upstream Minnow Trap (21)  
 
Species: juvenile Chinook salmon Life History: Anadromous
Total Fish Observed: 12 Fish Measured: 6 Fork Lengths (mm) Min: 45 Max: 74 Mean: 52
Collected/Observed by Gear Type: Downstream Minnow Trap (12)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 37 Fish Measured: 16 Fork Lengths (mm) Min: 60 Max: 83 Mean: 68
Collected/Observed by Gear Type: Downstream Minnow Trap (25)  Upstream Minnow Trap (12)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 100 Max: 100 Mean: 100
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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