Fish Passage Site 20501490

Coordinates (dec. deg.): 62.47888°, -150.74772°
Legal Description: S028N008W34
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-2
AWC Stream #:
Stream Name: Peters 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-PVR13

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient gray
  3. Road bank erosion

Comments: Pipes 1 and 4 are higher, set as smaller overflow pipes and are dry and not part of the active stream channel and were not considered when calculating constriction ratio. Most of the flow is through pipe 2.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 49.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 24.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):2.1 2.0
Height(ft):1.9 1.9
Apron Length(ft):
Water Depth(ft): 0.0
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Overflow Pipe
Constriction Ratio: 0.65
Culvert Gradient: 0.00%
Max Slope:
Max Slope Length:
 

Comments: overflow pipe, no water
  Culvert Observations:
  1. Road bank erosion
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 47.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 24.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.7 3.7
Height(ft):3.2 3.3
Apron Length(ft):
Water Depth(ft): 0.31
Rustline Height(ft):1.1
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: 0.65
Culvert Gradient: 0.48%
Max Slope:
Max Slope Length:
 

Comments: Most flow is in pipe 2
  Culvert Observations:
  1. Constriction ratio gray
  2. Road bank erosion
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 47.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 24.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.6 3.5
Height(ft):2.8 2.7
Apron Length(ft):
Water Depth(ft): 0.38
Rustline Height(ft):0.8
Substrate Depth(ft):0.4 0.8
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.65
Culvert Gradient: 0.67%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient gray
  3. Road bank erosion
ID: 4 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating:
 
Length(ft): 48.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 24.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.1
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft): 0.0
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Overflow Pipe
Constriction Ratio:
Culvert Gradient: -0.10%
Max Slope:
Max Slope Length:
 

Comments: Dry overflow pipe.
  Culvert Observations:
  1. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 73.0 7.50
Downstream ordinary high water 125.0 8.00
Downstream ordinary high water 145.0 8.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 2 95.69
Outlet Pool Water Elev 3 96.00
U/S Headwater 2 96.37
U/S Headwater 3 96.39
D/S Grade Ctrl (Thalweg) 0.00 21.5 95.08
D/S Water Surface Elev (WS @ GP) 0.00 21.5 95.46
D/S Water Surface Elev (WS @ GP) 13.00 8.5 96.78
D/S Tailcrest or 1st Thalweg 13.90 7.6 95.20
D/S Water Surface Elev (WS @ TWC) 13.90 7.6 95.65
D/S Thalweg (6' d/s pipe 2 bottom of out pool & confluence) 2 15.50 6.0 94.80
Outlet Invert 3 21.50 0.0 95.62
Outlet Invert 2 21.50 0.0 95.38
Outlet Invert (no water) 1 21.50 0.0 97.94
Outlet Invert 4 21.50 0.0 97.97
Road Elev 45.50 101.42
Inlet Culvert Invert (no water) 4 69.50 0.0 97.92
Inlet Culvert Invert (no water) 1 69.50 0.0 97.94
Inlet Culvert Invert 2 69.50 0.0 95.61
Inlet Culvert Invert (on substrate) 3 69.50 0.0 95.94
U/S Grade Ctrl (Thalweg) (1st u/s TC) 78.00 8.5 96.58

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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