Fish Passage Site 50101613

Coordinates (dec. deg.): 64.82084°, -165.22710°
Legal Description: K008S032W06
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Nome D-1
AWC Stream #:
Stream Name: Mitigation Ponds

Elevation:

Site Comments: Mile 25.9. Connects mitigation ponds to Nome River

Survey Date: Sep 25, 2005

Survey SEW05-KR25

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. Sediment accumulation

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 90.1
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 5
Approach Angle: 77.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: None
InletOutlet
Width(ft):6.2
Height(ft):6.2
Apron Length(ft):
Water Depth(ft): 2.83
Rustline Height(ft):0.0
Substrate Depth(ft):0.7 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.15
Culvert Gradient: 0.47%
Max Slope:
Max Slope Length:
 

Comments: water depth calc'ed
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Sediment accumulation

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelCobble
Subdominant:Silt/ClayCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water
Upstream bank full 75.0 29.00
Upstream bank full 100.0 28.90
Upstream bank full 125.0 54.50
Upstream bank full 150.0 75.80
Upstream bed width 75.0 20.90
Upstream bed width 100.0 20.90
Upstream bed width 125.0 42.00
Upstream bed width 150.0 62.80
Upstream ordinary high water 75.0 23.50
Upstream ordinary high water 100.0 23.40
Upstream ordinary high water 125.0 45.60
Upstream ordinary high water 150.0 68.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 96.85
U/S Thalweg 97.03
Outlet Invert 1 0.00 0.0 94.02
Road Elev 45.00 107.73
Inlet Culvert Invert 1 90.00 0.0 94.44
U/S Thalweg 102.00 12.0 95.57
U/S Grade Ctrl (Thalweg) 115.00 25.0 95.54

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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