Fish Passage Site 50101593

Coordinates (dec. deg.): 65.30726°, -164.75146°
Legal Description: K002S030W13
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Bendeleben B-6
AWC Stream #:
Stream Name: Coffee Creek

Elevation:

Site Comments: Mile 75.1

Survey Date: Sep 17, 2005

Survey SEW05-KR05

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert sagging in middle
  2. Culvert gradient gray
  3. Constriction ratio gray
  4. Outfall height gray
  5. Hydraulic flows exceeded capacity
  6. Road bank erosion

Comments: Pipe full and water piping through fill ~200' W of x-ing.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 92.6
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.3 5.3
Height(ft):5.3 5.3
Apron Length(ft):
Water Depth(ft): 1.4
Rustline Height(ft):5.3
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.29
Outfall Type:
Constriction Ratio: 0.63
Culvert Gradient: 0.50%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert sagging in middle
  2. Culvert gradient gray
  3. Constriction ratio gray
  4. Outfall height gray
  5. Hydraulic flows exceeded capacity
  6. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/Clay
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 160.0 6.00
Upstream bank full 75.0 28.70
Upstream bank full 100.0 27.80
Upstream bank full 125.0 16.50
Upstream bank full 150.0 22.90
Upstream bed width
Upstream ordinary high water 75.0 9.10
Upstream ordinary high water 100.0 15.40
Upstream ordinary high water 125.0 4.30
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 4.05
Outlet Pool Water Elev 87.05
U/S Thalweg 87.90
D/S Grade Ctrl (Thalweg) 0.00 160.0 84.41
D/S Tailcrest or 1st Thalweg 117.00 43.0 85.52
Bankfull 117.00 43.0 87.00
D/S Thalweg 155.00 5.0 2.80
Outlet Invert 1 160.00 0.0 85.94
Road Elev 206.00 103.31
Inlet Culvert Invert 1 252.00 0.0 86.40
U/S Thalweg 262.00 10.0 85.16
U/S Grade Ctrl (Thalweg) 271.00 19.0 85.44

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