Fish Passage Site 50101601

Coordinates (dec. deg.): 64.92364°, -164.91870°
Legal Description: K006S031W34
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Solomon D-6
AWC Stream #:
Stream Name: Pilgrim River tributary

Elevation:

Site Comments: Mile 41.7. Confluence with Pilgrim River ~300m d/s.

Survey Date: Sep 20, 2005

Survey SEW05-KR13

Project Supervisor: Dave Ryland,
Observers: Dave Ryland, Jason Cheney, Paul Thompson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Constriction ratio red

Comments: Riprap in channel at outlet

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 39.9
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle: 16.0
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0
Height(ft):4.0
Apron Length(ft):
Water Depth(ft): 1.13
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio: 0.47
Culvert Gradient: 2.86%
Max Slope:
Max Slope Length:
 

Comments: well developed rustline in pipe; adult grayling obs u/s of inlet
  Culvert Observations:
  1. Culvert gradient red
  2. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water
Downstream ordinary high water 54.0 6.70
Upstream bank full 75.0 10.90
Upstream bank full 100.0 12.60
Upstream bank full 125.0 10.70
Upstream bank full 150.0 13.20
Upstream bed width 75.0 4.70
Upstream bed width 100.0 5.30
Upstream bed width 125.0 8.20
Upstream bed width 150.0 5.10
Upstream ordinary high water 75.0 8.40
Upstream ordinary high water 100.0 9.00
Upstream ordinary high water 125.0 9.30
Upstream ordinary high water 150.0 7.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 91.61
U/S Thalweg 92.41
D/S Grade Ctrl (Thalweg) 0.00 54.0 88.31
D/S Thalweg 40.00 14.0 89.26
D/S Grade Ctrl (Thalweg) 45.00 9.0 90.55
D/S Grade Ctrl (Thalweg) 49.00 5.0 90.66
Outlet Invert 1 54.00 0.0 90.48
Road Elev 73.50 99.65
Inlet Culvert Invert 1 93.00 0.0 91.62
U/S Thalweg 101.00 8.0 92.18
U/S Grade Ctrl (Thalweg) 128.00 35.0 93.57

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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