Fish Passage Site 50101634

Coordinates (dec. deg.): 64.50799°, -165.30186°
Legal Description: K011S033W29
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Nome C-1
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 1.7

Survey Date: Oct 10, 2005

Survey SEW05-KR46

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height gray
  2. Mechanical damage or joints parting

Comments: Two approx 85mm Dolly Varden observed @ outlet attempting to swim through culvert. Channel is low gradient, incised with undercut banks

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 160.5
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle: 9.0
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.8
Height(ft):5.1
Apron Length(ft):
Water Depth(ft): 0.5
Rustline Height(ft):1.4
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.11
Outfall Type:
Constriction Ratio: 0.96
Culvert Gradient: 0.46%
Max Slope:
Max Slope Length:
 

Comments: build up of small & large cobble imm. u/s of inlet
  Culvert Observations:
  1. Outfall height gray
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water
Downstream ordinary high water 99.0 6.00
Upstream bank full 75.0 10.20
Upstream bank full 100.0 7.80
Upstream bank full 125.0 7.30
Upstream bank full 150.0 5.70
Upstream bed width 75.0 3.80
Upstream bed width 100.0 4.50
Upstream bed width 125.0 4.60
Upstream bed width 150.0 3.70
Upstream ordinary high water 75.0 5.40
Upstream ordinary high water 100.0 5.40
Upstream ordinary high water 125.0 4.90
Upstream ordinary high water 150.0 4.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Max Pool Depth 0.80
Outlet Pool Water Elev 95.35
D/S Grade Ctrl (Thalweg) 0.00 99.0 94.02
D/S Tailcrest or 1st Thalweg 56.00 43.0 94.80
OHW (Outlet Tailcrest) 56.00 43.0 95.28
D/S Thalweg 94.00 5.0 0.70
Outlet Invert 1 99.00 0.0 94.96
Road Elev 179.00 104.95
Inlet Culvert Invert 1 259.00 0.0 95.70
U/S Grade Ctrl (Thalweg) 262.00 3.0 96.24
U/S Grade Ctrl (Thalweg) 264.00 5.0 96.09
U/S Thalweg 269.00 10.0 95.70
U/S Grade Ctrl (Thalweg) 334.00 75.0 96.27
U/S Thalweg 409.00 150.0 94.79

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: Visual Observation, Ground (A)
Channel Type: Main Channel (>50% of water flow)
Comments: attempting to swim through culvert

Fish Observations

Species: Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Visual Observation, Ground (2)  

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