Fish Passage Site 20501506

Coordinates (dec. deg.): 62.35305°, -150.64861°
Legal Description: S026N007W07
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-2
AWC Stream #:
Stream Name: Kroto Creek tributary

Elevation:

Site Comments: None

Survey Date: Jul 07, 2009

Survey PRK09-PVR29

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. Woody Debris
  2. Culvert gradient gray
  3. Beaver Activity

Comments: **Updated Site photos added from 9/8/16 site visit from Sampling Unmapped Streams in the MSB project.** Fish data in AFFI. Large spruce jammed in pipe 2.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 61.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 11.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.6 5.0
Height(ft):5.3 5.0
Apron Length(ft):
Water Depth(ft): 2.55
Rustline Height(ft):2.6
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: 0.77
Culvert Gradient: 0.66%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Beaver Activity
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 65.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 11.0
Sedimentation At Inlet: No
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):3.9 5.0
Height(ft):3.9 5.0
Apron Length(ft):
Water Depth(ft): 2.2
Rustline Height(ft):1.0
Substrate Depth(ft):0.7 0.0
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.77
Culvert Gradient: 1.42%
Max Slope:
Max Slope Length:
 

Comments: Pipe nearly plugged at inlet with dirt packed around a dead spruce. Slope from pipe w/o substrate at inlet.
  Culvert Observations:
  1. Culvert gradient gray
  2. Woody Debris
  3. Beaver Activity

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)
Upstream ordinary high water 84.0 12.00
Upstream ordinary high water 145.0 6.00
Upstream ordinary high water 175.0 5.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Headwater 1 96.78
U/S Headwater 2 96.78
Outlet Pool Water Elev 1 96.78
Outlet Pool Water Elev 2 96.80
D/S Water Surface Elev (d/s) 0.00 73.0 96.10
D/S Water Surface Elev (imm. d/s of TWC dam) 51.50 21.5 96.11
D/S Tailcrest or 1st Thalweg 54.40 18.6 96.43
D/S Water Surface Elev (WS at TWC) 54.40 18.6 96.79
D/S Thalweg 1 68.00 5.0 94.25
D/S Thalweg 2 68.00 5.0 94.49
Outlet Invert 2 73.00 0.0 94.60
Outlet Invert 1 73.00 0.0 94.23
Road Elev 104.50 103.28
Inlet Culvert Invert (on substrate) 2 136.00 0.0 96.23
Inlet Culvert Invert (Pool imm. u/s inlets) 1 136.00 0.0 94.63

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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