Fish Passage Site 20300936

Coordinates (dec. deg.): 60.31045°, -149.36021°
Legal Description: S003N001W36
Region: South Central
Road Name: Seward Highway

Datum: NAD83
Quad Name / ITM: Seward B-7
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Aug 27, 2001

Survey KPCS1-EK052

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Channel 80 ft. above to 50 ft. below culvert is a flat-bottom channelized riffle from construction activities. New culverts with 2 overflow culverts above. Riffle below right culvert, shallow pool below left.

Culvert Measurements

ID: 1 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 93.0
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: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):12.7 12.9
Height(ft):8.25 8.25
Apron Length(ft):
Water Depth(ft):0.35 0.33
Rustline Height(ft):
Substrate Depth(ft):0.35 0.33
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 1.09
Culvert Gradient:
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): 93.0
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: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):12.7 12.9
Height(ft):8.25 8.25
Apron Length(ft):
Water Depth(ft):0.27 0.31
Rustline Height(ft):
Substrate Depth(ft):0.27 0.31
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 1.09
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 41.5 15.60
Downstream ordinary high water 50.0 14.40
Downstream ordinary high water 96.0 15.00
Upstream ordinary high water 5.0 30.60
Upstream ordinary high water 50.0 27.20
Upstream ordinary high water 100.0 19.60

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 84.04
Max Pool Depth 84.75
D/S Thalweg 0.00 96.0 83.27
D/S Water Surface Elev 0.00 96.0 83.62
D/S OHW Elev 0.00 96.0 84.96
D/S Water Surface Elev 46.00 50.0 85.10
D/S Thalweg 46.00 50.0 84.65
D/S OHW Elev 46.00 50.0 86.00
OHW Left Bank 62.90 33.1 86.06
OHW Left Bank 91.00 5.0 85.19
Outlet Thalweg 2 96.00 0.0 85.37
Outlet Thalweg 1 96.00 0.0 84.92
Outlet Culvert Top 2 96.00 0.0 92.79
Outlet Culvert Top 1 96.00 0.0 92.90
Road Elev 142.50 96.94
Road Elev 142.50 96.96
Inlet Culvert Top 2 189.00 0.0 93.94
Inlet Culvert Top 1 189.00 0.0 94.00
Inlet Thalweg 1 189.00 0.0 86.19
Inlet Thalweg 2 189.00 0.0 86.25
Inlet Culvert Invert 2 189.00 0.0 85.69
U/S Thalweg 2 190.00 1.0 86.25
U/S Thalweg 1 190.00 1.0 86.06
U/S Thalweg 1 194.00 5.0 86.46
U/S Thalweg 2 194.00 5.0 86.46
U/S Water Surface Elev 2 194.00 5.0 86.75
U/S Water Surface Elev 1 194.00 5.0 86.77
U/S Thalweg 1 214.60 25.6 86.83
U/S Thalweg 2 214.60 25.6 86.67
U/S Thalweg 239.00 50.0 87.08
U/S Water Surface Elev 239.00 50.0 87.21
U/S Headwater 239.00 50.0 88.04
U/S Water Surface Elev 289.00 100.0 88.15
U/S Headwater 289.00 100.0 88.54
U/S Thalweg 289.00 100.0 87.90

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): 1.15
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.3

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 18 Fish Measured: 9 Fork Lengths (mm) Min: 68 Max: 122 Mean: 82
Collected/Observed by Gear Type: Downstream Minnow Trap (14)  Upstream Minnow Trap (4)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 28 Fish Measured: 11 Fork Lengths (mm) Min: 46 Max: 105 Mean: 66
Collected/Observed by Gear Type: Downstream Minnow Trap (26)  Upstream Minnow Trap (2)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 8 Fish Measured: 4 Fork Lengths (mm) Min: 65 Max: 142 Mean: 91
Collected/Observed by Gear Type: Upstream Minnow Trap (8)  

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