Fish Passage Site 50101620

Coordinates (dec. deg.): 64.73799°, -165.23831°
Legal Description: K009S033W03
Region: Arctic
Road Name: Kougarok Road

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

Elevation:

Site Comments: Mile 20.0. Side channel of stream at KR31

Survey Date: Sep 26, 2005

Survey SEW05-KR32

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting

Comments: Juvenile coho caught in outlet pool.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 75.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 96.0
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):10.0
Height(ft):4.7 4.0
Apron Length(ft):
Water Depth(ft): 2.16
Rustline Height(ft):1.8
Substrate Depth(ft):1.4 2.1
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.75
Outfall Height: 0.0
Outfall Type:
Constriction Ratio: 1.44
Culvert Gradient: 0.25%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelSand
Subdominant:CobbleSilt/Clay
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water
Downstream ordinary high water 133.0 8.90
Upstream bank full 75.0 16.70
Upstream bank full 100.0 11.80
Upstream bank full 125.0 8.70
Upstream bank full 150.0 10.90
Upstream bed width 75.0 7.80
Upstream bed width 100.0 6.50
Upstream bed width 125.0 4.60
Upstream bed width 150.0 2.80
Upstream ordinary high water 75.0 11.10
Upstream ordinary high water 100.0 8.20
Upstream ordinary high water 125.0 4.80
Upstream ordinary high water 150.0 3.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Max Pool Depth 3.20
Outlet Pool Water Elev 96.47
U/S Thalweg 96.67
D/S Grade Ctrl (Thalweg) 0.00 133.0 95.39
D/S Tailcrest or 1st Thalweg 97.00 36.0 94.85
OHW (Outlet Tailcrest) 97.00 36.0 96.38
D/S Thalweg 128.00 5.0 2.50
Outlet Invert 1 133.00 0.0 94.31
Road Elev 170.50 105.73
Inlet Culvert Invert 1 208.00 0.0 94.50
U/S Thalweg 228.00 20.0 95.96
U/S Grade Ctrl (Thalweg) 250.00 42.0 96.31

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.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov