Fish Passage Site 20601531

Coordinates (dec. deg.): 61.14457°, -151.08124°
Legal Description: S012N010W08
Region: South Central
Road Name: Beluga Highway

Datum: NAD83
Quad Name / ITM: Tyonek A-3
AWC Stream #:
Stream Name: 3 Mile Creek

Elevation:

Site Comments: None

Survey Date: Jun 06, 2002

Survey TYCS1-TY005

Observers: Cecil Rich, Michael Anderson, Joe Buckwalter

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height gray
  2. Inlet perch

Comments: Datum = WGS84. Sheet pile stabilzing inlet and outlet. Water depth over the sheetpile 0.38 feet at both the inlet and outlet. Site was visited in April 2016. New photos added. Evidence upstream and downstream of very high water (2016)

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Green
 
Length(ft): 80.4
Inlet Type: Mitered
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):25.0 25.0
Height(ft):15.13 13.83
Apron Length(ft):
Water Depth(ft):1.21 0.58
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.79
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.7
Culvert Gradient: -0.93%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 54.0 10.50
Downstream ordinary high water 125.0 43.00
Downstream ordinary high water 252.0 46.00
Upstream ordinary high water 5.0 49.00
Upstream ordinary high water 135.0 29.20
Upstream ordinary high water 253.0 42.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Thalweg 1 94.02
D/S Water Surface Elev 0.00 251.0 94.08
D/S OHW Elev 0.00 251.0 95.29
D/S Thalweg 0.00 251.0 93.35
D/S Thalweg 126.00 125.0 93.85
D/S Water Surface Elev 126.00 125.0 94.37
D/S OHW Elev 126.00 125.0 95.62
D/S Tailcrest or 1st Thalweg 197.00 54.0 94.17
OHW Left Bank 230.50 20.5 96.25
OHW Left Bank 244.50 6.5 94.83
D/S Thalweg 249.00 2.0 91.52
Max Pool Depth 1 249.00 2.0 91.52
Outlet Thalweg 1 251.00 0.0 92.21
Outlet Invert (weir backs up gravel DS culver) 1 251.00 0.0 95.04
Outlet Rustline Height 1 251.00 0.0 96.92
Outlet Culvert Top 1 251.00 0.0 108.87
Road Elev 291.00 113.27
Road Elev 291.00 113.31
Inlet Culvert Top 1 331.00 0.0 109.42
Inlet Rustline Height 1 331.00 0.0 96.67
Inlet Culvert Invert 1 331.00 0.0 94.29
Inlet Thalweg 1 331.00 0.0 92.90
U/S Thalweg 1 332.00 1.0 92.48
U/S Thalweg 1 336.00 5.0 93.29
U/S Water Surface Elev 1 336.00 5.0 95.48
U/S OHW elevation 1 336.00 5.0 97.44
U/S Thalweg 466.00 135.0 95.77
U/S Water Surface Elev 466.00 135.0 96.04
U/S Headwater 466.00 135.0 97.81
U/S Headwater 566.00 235.0 97.75
U/S Water Surface Elev 566.00 235.0 96.98
U/S Thalweg 584.00 253.0 96.35

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, 1/4 in. Mesh (A) Trap Duration(h): 2.25
 
Gear Type: Minnow Trap, 1/4 in. Mesh (B) Trap Duration(h): 2.75

Fish Observations

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 22 Fish Measured: 10 Fork Lengths (mm) Min: 60 Max: 132 Mean: 105
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (12)  Upstream Minnow Trap, 1/4 in. Mesh (10)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 97 Fish Measured: 20 Fork Lengths (mm) Min: 61 Max: 129 Mean: 74
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (67)  Upstream Minnow Trap, 1/4 in. Mesh (30)  

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