Fish Passage Site 50101604

Coordinates (dec. deg.): 64.91885°, -164.99199°
Legal Description: K006S031W32
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Solomon D-6
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 39.25. Salmon Lake ~ 75m downstream of outlet

Survey Date: Sep 21, 2005

Survey SEW05-KR16

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 is poorly aligned
  2. Culvert gradient red
  3. Constriction ratio gray
  4. Hydraulic flows exceeded capacity

Comments: Fish observed in outlet pool, possibly coho or dolly varden.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 62.9
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle: 77.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.1 3.1
Height(ft):3.1 3.1
Apron Length(ft):
Water Depth(ft): 0.8
Rustline Height(ft):0.9
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.12
Outfall Type: At Stream Grade
Constriction Ratio: 0.58
Culvert Gradient: 5.29%
Max Slope:
Max Slope Length:
 

Comments: Juvenile fish obs. in outlet by PT, possibly coho or DV; water depth inlet = 0.6'
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Culvert gradient red
  3. Constriction ratio gray
  4. Hydraulic flows exceeded capacity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelGravel
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 125.0 7.40
Upstream bank full 75.0 12.80
Upstream bank full 100.0 9.50
Upstream bank full 125.0 10.40
Upstream bank full 150.0 8.40
Upstream bed width 75.0 4.20
Upstream bed width 100.0 3.70
Upstream bed width 125.0 2.80
Upstream bed width 150.0 3.60
Upstream ordinary high water 75.0 6.70
Upstream ordinary high water 100.0 4.50
Upstream ordinary high water 125.0 5.30
Upstream ordinary high water 150.0 4.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Max Pool Depth 0.70
Outlet Pool Water Elev 91.34
U/S Thalweg 94.72
D/S Grade Ctrl (Thalweg) 0.00 125.0 88.37
D/S Tailcrest or 1st Thalweg 118.50 6.5 90.83
OHW (Outlet Tailcrest) 118.50 6.5 91.05
D/S Thalweg 120.00 5.0 0.30
Outlet Invert 1 125.00 0.0 90.66
Road Elev 156.00 102.24
Inlet Culvert Invert 1 187.00 0.0 93.99
U/S Thalweg 193.00 6.0 94.23
U/S Grade Ctrl (Thalweg) 213.00 26.0 94.52

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