Fish Passage Site 20501505

Coordinates (dec. deg.): 62.34094°, -150.60600°
Legal Description: S026N007W17
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-2
AWC Stream #: 247-41-10200-2081-3196
Stream Name: Kroto Creek tributary

Elevation:

Site Comments: None

Survey Date: Jul 07, 2009

Survey PRK09-PVR28

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools:
Construction Year:


Site Observations:

  1. Culvert is poorly aligned

Comments: **Updated site photos added from 9/8/16 site visit from Sampling Unmapped Streams in the MSB project.Fish sampling information entered into AFFI** TWC > inverts = backwatered.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 50.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 91.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.9 3.0
Height(ft):3.0 2.6
Apron Length(ft):
Water Depth(ft): 0.58
Rustline Height(ft):2.0
Substrate Depth(ft):0.0 0.0
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.07
Culvert Gradient: -0.23%
Max Slope:
Max Slope Length:
 

Comments: Tailwater control is higher than invert, site is backwatered.
  Culvert Observations:
  1. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 36.0 1.20
Downstream ordinary high water 105.0 1.50
Downstream ordinary high water 140.0 1.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Headwater (Pool imm. u/s inlet) 1 97.79
Outlet Pool Water Elev 1 97.79
D/S Grade Ctrl (Thalweg) 1 0.00 36.0 97.24
D/S Water Surface Elev (WS @ GP) 1 0.00 36.0 97.36
D/S Tailcrest or 1st Thalweg 1 22.50 13.5 97.69
D/S Water Surface Elev (WS @ TWC) 1 22.50 13.5 97.77
D/S Thalweg (bottom of outlet pool) 1 33.00 3.0 96.62
D/S Thalweg (streambed at outlet end of pipe) 1 36.00 0.0 96.93
Outlet Invert 1 36.00 0.0 97.21
Road Elev 1 61.00 105.04
Inlet Culvert Invert 1 86.00 0.0 97.09

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; 150ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: no fish caught; 80ft d/s
 
Gear Type: Minnow Trap (C) Trap Duration(h): 16.0
Comments: Site trapped 9/8/16. Two traps set upstream one 10 feet upstream and one about 50 feet upstream from crossing.
 
Gear Type: Minnow Trap (D) Trap Duration(h): 16.0
Comments: Site trapped 9/8/16. Trap set about 10 feet downstream.

Fish Observations

No fish observations occurred during this survey.

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