Fish Passage Site 20300979

Coordinates (dec. deg.): 60.30205°, -151.27128°
Legal Description: S003N012W36
Region: South Central
Road Name: Sterling Highway

Datum: NAD83
Quad Name / ITM: Kenai B-4
AWC Stream #: 244-30-10050-2024
Stream Name: Crooked Creek

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-NK014

Observers: Cecil Rich, Tracy Smith

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Severe embankment erosion at outlet. Large outlet pool > 8 feet deep. Perched outlet invert 6-8". Unstable upstream embankment slope.

Culvert Measurements

ID: 1 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 113.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: Boulder
InletOutlet
Width(ft):7.4 7.5
Height(ft):8.38 8.75
Apron Length(ft):
Water Depth(ft):1.5 1.17
Rustline Height(ft):
Substrate Depth(ft):0.0 2.83
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.92
Outfall Type:
Constriction Ratio: 0.54
Culvert Gradient: 2.11%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type
ID: 2 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 114.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):7.7 7.5
Height(ft):8.54 8.75
Apron Length(ft):
Water Depth(ft):2.08 1.34
Rustline Height(ft):
Substrate Depth(ft):0.0 3.04
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.92
Outfall Type:
Constriction Ratio: 0.54
Culvert Gradient: 1.89%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelCobble
Subdominant:CobbleGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 53.0 62.70
Downstream ordinary high water 119.0 26.80
Downstream ordinary high water 180.0 30.00
Upstream ordinary high water 5.0 24.70
Upstream ordinary high water 102.0 25.20
Upstream ordinary high water 184.0 30.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 78.32
D/S Thalweg 0.00 180.0 85.10
D/S OHW Elev 0.00 180.0 86.10
D/S Water Surface Elev 0.00 180.0 86.10
D/S Thalweg 61.00 119.0 85.25
D/S OHW Elev 61.00 119.0 86.54
D/S Water Surface Elev 61.00 119.0 86.58
D/S Tailcrest or 1st Thalweg 133.00 47.0 86.15
D/S Water Surface Elev 133.00 47.0 87.12
OHW Left Bank 133.00 47.0 87.27
OHW Left Bank 175.00 5.0 87.65
Max Pool Depth 175.00 5.0 79.25
OHW Left Bank 175.00 5.0 87.00
Outlet Culvert Top 2 180.00 0.0 95.33
Outlet Culvert Top 1 180.00 0.0 95.50
Outlet Thalweg 2 180.00 0.0 83.54
Outlet Thalweg 1 180.00 0.0 83.92
Outlet Rustline Height 2 180.00 0.0 88.08
Outlet Rustline Height 1 180.00 0.0 88.25
Outlet Invert 2 180.00 0.0 86.58
Outlet Invert 1 180.00 0.0 86.75
Road Elev 236.50 112.77
Road Elev 236.50 112.88
Inlet Culvert Top 2 293.00 0.0 97.27
Inlet Culvert Top 1 293.00 0.0 97.42
Inlet Rustline Height 2 293.00 0.0 90.88
Inlet Culvert Invert 1 293.00 0.0 89.13
Inlet Thalweg 1 293.00 0.0 89.13
Inlet Rustline Height 1 293.00 0.0 91.04
Inlet Culvert Invert 2 293.00 0.0 88.73
Inlet Thalweg 2 293.00 0.0 88.73
U/S Thalweg 2 294.00 1.0 88.83
U/S Thalweg 1 294.00 1.0 89.17
U/S OHW elevation 1 298.00 5.0 91.15
U/S Thalweg 1 298.00 5.0 89.40
U/S Water Surface Elev 2 298.00 5.0 90.77
U/S Water Surface Elev 1 298.00 5.0 90.88
U/S Thalweg 2 298.00 5.0 89.10
U/S OHW elevation 2 298.00 5.0 91.46
U/S Thalweg 1 308.00 15.0 89.67
U/S Thalweg 2 308.00 15.0 89.17
U/S Thalweg 395.00 102.0 89.35
U/S Headwater 395.00 102.0 91.35
U/S Water Surface Elev 395.00 102.0 91.02
U/S Headwater 477.00 184.0 91.82
U/S Water Surface Elev 477.00 184.0 91.40
U/S Thalweg 477.00 184.0 90.04

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): 2.33
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.67

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Resident
Total Fish Observed: 48 Fish Measured: 16 Fork Lengths (mm) Min: 109 Max: 143 Mean: 120
Collected/Observed by Gear Type: Downstream Minnow Trap (36)  Upstream Minnow Trap (12)  
 
Species: juvenile Chinook salmon Life History: Anadromous
Total Fish Observed: 18 Fish Measured: 8 Fork Lengths (mm) Min: 62 Max: 95 Mean: 80
Collected/Observed by Gear Type: Downstream Minnow Trap (18)  
Comments: Adult Chinnook observed in outlet pool
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 14 Fish Measured: 7 Fork Lengths (mm) Min: 50 Max: 80 Mean: 67
Collected/Observed by Gear Type: Upstream Minnow Trap (14)  
 
Species: juvenile/adult rainbow trout Life History: Resident
Total Fish Observed: 4 Fish Measured: 2 Fork Lengths (mm) Min: 79 Max: 85 Mean: 82
Collected/Observed by Gear Type: Downstream Minnow Trap (4)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 73 Max: 73 Mean: 73
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  
 
Species: juvenile/adult sculpin-unspecified Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 3 Fork Lengths (mm) Min: 76 Max: 95 Mean: 87
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  

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