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

Elevation:

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 PRK09-OWR01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Culvert gradient red

Comments: no fish captured; 2 observed ~6-8 in.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 30.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 17.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 2.5
Height(ft):2.5 2.5
Apron Length(ft):
Water Depth(ft): 0.49
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.43
Culvert Gradient: 1.10%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 106.0 4.50
Downstream ordinary high water 130.0 4.50
Downstream ordinary high water 165.0 8.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Thalweg (wd = 0.51) 1 97.41
Outlet Pool Water Elev 1 97.63
U/S Headwater 1 97.83
D/S Grade Ctrl (Thalweg) 1 0.00 52.0 96.51
D/S Water Surface Elev (ws @ GP) 1 0.00 52.0 97.30
D/S Water Surface Elev (ws @ TWC) 1 28.00 24.0 97.37
D/S Tailcrest or 1st Thalweg 1 28.00 24.0 96.65
D/S Thalweg 1 47.00 5.0 96.41
Outlet Invert 1 52.00 0.0 97.14
Road Elev 1 67.00 102.44
Inlet Culvert Invert 1 82.00 0.0 97.47

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

Gear Type: Minnow Trap (A) Trap Duration(h): 1.0
Comments: no fish caught; 70ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: no fish caught; 50ft d/s
 
Gear Type: Visual Observation, Ground (C)
Comments: 2 fish unidentified fish observed, location not recorded.

Fish Observations

No fish observations occurred during this survey.

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