Fish Passage Site 20501515

Coordinates (dec. deg.): 62.01909°, -149.94826°
Legal Description: S022N004W02
Region: South Central
Road Name: Shaman Road

Datum: WGS84
Quad Name / ITM: Talkeetna Mts A-6
AWC Stream #: 247-41-10200-2190-3020-4052
Stream Name: Caswell Creek Tributary


Site Comments: None

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey UPD20-SHA02

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Gillian O'Doherty, Kim Clark

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2019

Comments: Shaman North per the plans. Landowner says it does not run all winter but was running at time of survey. Minor aggradation at inlet. Substrate is hard to see as stream is frozen with thick ice.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
Length(ft): 60.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.33
Corrugation Width(in.): 2.5
Condition Rating(1-5): 5
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate:
Width(ft):8.0 8.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.37
Culvert Gradient: 1.69%
Max Slope:
Max Slope Length:

Comments: Due to ice outlet and inlet heights, water depth, and emebed depth were not measureable Per the designs: BFW 8 ft, Low flow channel consructed at 4' wide. OHM from old survey 5.83 ft.

Stream Measurements

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

No stream width data available.


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
Outlet Culvert Top (top of corregation) 0.00 98.20
Inlet Culvert Top 60.46 99.22


  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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