Fish Passage Site 20501472

Coordinates (dec. deg.): 62.10631°, -150.52565°
Legal Description: S023N007W03
Region: South Central
Road Name: Oil Well Road

Datum: WGS84
Quad Name / ITM: Talkeetna A-2
AWC Stream #:
Stream Name: Kroto 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 UPDATE-01472

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2014

Site Observations:

  1. None of this type

Comments: **Updated site photos added from 9/7/16 site visit from Sampling Unmapped Streams in the MSB project.Fish sampling information entered into AFFI*** Replaced in 2014, resurveyed 10/21/15. No stream widths multiple channels, wetlands and lakes. No fish caught or observed.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
Length(ft): 60.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: Sand
Outlet Substrate: Sand
Width(ft):7.6 7.9
Height(ft):4.1 4.1
Apron Length(ft):
Water Depth(ft): 0.52
Rustline Height(ft):
Substrate Depth(ft):3.9 3.8
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 3.8
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.09%
Max Slope:
Max Slope Length:

Comments: Stream slope taken from replacement plans. Plans call for a pipe arch but culvert appears to be a circular CSP.

  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):0.57
Stream Flow Stage:High

No stream width data available.


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
Road Elev 102.24
Outlet Culvert Top 0.00 99.48
Outlet Invert (on substrate) 0.00 95.39
D/S Water Surface Elev 0.00 95.91
Inlet Culvert Invert (on substrate) 60.60 95.97
U/S Water Surface Elev 60.60 96.39
Inlet Culvert Top 60.60 100.14


  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

Gear Type: Minnow Trap (A) Trap Duration(h): 30.0
Comments: No fish caught or observed
Gear Type: Minnow Trap (B) Trap Duration(h): 30.0
Comments: No fish caught or observerd

Fish Observations

No fish observations occurred during this survey.

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