Fish Passage Site 20503423

Coordinates (dec. deg.): 61.66370°, -149.94939°
Legal Description: S018N004W11
Region: South Central
Road Name: Alaska Railroad

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Unnamed


Site Comments: MP 179.1

Survey Date: May 11, 2015


Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman, Gillian O'Doherty

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Comments: Upstream width about 3 feet. There is a perched culvert about 300 feet upstream from site not in mapper. Nice gravels upstream. Water fairly flat though culvert, does not appear to be a barrier.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
Length(ft): 46.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle: 23.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: Sand
Width(ft):4.1 4.0
Height(ft):3.7 3.5
Apron Length(ft):
Water Depth(ft): 0.8
Rustline Height(ft):1.6
Substrate Depth(ft):0.0 0.3
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.15%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
Outlet Culvert Top 0.00 95.00
Inlet Culvert Top 46.80 95.07


  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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