Fish Passage Site 20300955

Coordinates (dec. deg.): 60.74331°, -149.36413°
Legal Description: S008N001W36
Region: South Central
Road Name: Seward Highway

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

Elevation:

Site Comments: None

Survey Date: Oct 02, 2001

Survey KPCS1-EK089

Observers: Cecil Rich, Tom Sigurdsson, James Maple

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Riprap used to narrow and direct outchannel. A second pool below outlet pool made with rebar and wood. Outlet pool backwater extends about 3/8 of way up culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 129.4
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: None
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):7.7 7.6
Height(ft):4.15 4.02
Apron Length(ft):
Water Depth(ft):0.38 0.9
Rustline Height(ft):
Substrate Depth(ft):0.33 0.52
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.39
Outfall Type:
Constriction Ratio: 2.08
Culvert Gradient: 0.76%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 13.0 9.80
Downstream ordinary high water 50.0 6.90
Downstream ordinary high water 100.0 4.00
Upstream ordinary high water 5.0 26.90
Upstream ordinary high water 50.0 3.90
Upstream ordinary high water 100.0 3.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 100.0 86.58
D/S Water Surface Elev 0.00 100.0 87.94
D/S OHW Elev 0.00 100.0 88.69
D/S Thalweg 50.00 50.0 88.87
D/S Water Surface Elev 50.00 50.0 89.58
D/S OHW Elev 50.00 50.0 89.90
D/S Water Surface Elev 87.00 13.0 90.23
D/S Tailcrest or 1st Thalweg 87.00 13.0 89.71
OHW Left Bank 87.00 13.0 90.73
OHW Left Bank 95.00 5.0 90.73
Max Pool Depth 95.00 5.0 89.17
D/S Thalweg 95.00 5.0 89.17
OHW Left Bank 95.00 5.0 90.23
Outlet Thalweg 1 100.00 0.0 89.46
Outlet Invert 1 100.00 0.0 88.94
Outlet Culvert Top 1 100.00 0.0 92.96
Road Elev 164.50 96.73
Road Elev 164.50 98.75
Inlet Culvert Top 1 229.00 0.0 94.07
Inlet Thalweg 1 229.00 0.0 90.25
Inlet Culvert Invert 1 229.00 0.0 89.92
Inlet Rustline Height 1 229.00 0.0 90.46
U/S Thalweg 1 230.00 1.0 90.36
U/S OHW elevation 1 234.00 5.0 90.98
U/S Water Surface Elev 1 234.00 5.0 90.69
U/S Thalweg 1 234.00 5.0 90.27
U/S Thalweg 1 244.20 15.2 90.27
U/S Thalweg 279.00 50.0 91.05
U/S Water Surface Elev 279.00 50.0 91.71
U/S Headwater 279.00 50.0 91.94
U/S Water Surface Elev 329.00 100.0 94.11
U/S Headwater 329.00 100.0 94.55
U/S Thalweg 329.00 100.0 93.46

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): 1.2
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.12

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 128 Max: 128 Mean: 128
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  
 
Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: 0 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (0)  

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