Fish Passage Site 20501499

Coordinates (dec. deg.): 62.49765°, -150.76802°
Legal Description: S028N008W21
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

Survey Date: Jul 01, 2009

Survey PRK09-PVR22

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. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray
  4. Shallow fill; inadequate roadfill volume above culvert
  5. Culvert is poorly aligned

Comments: Visual observation coho fry 2-4cm u/s and d/s.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 20.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 20.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 3.9
Apron Length(ft):
Water Depth(ft): 0.17
Rustline Height(ft):1.7
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.47
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.62
Culvert Gradient: 6.02%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray
  4. Shallow fill; inadequate roadfill volume above culvert
  5. Culvert is poorly aligned
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 20.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 20.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):4.0 3.9
Height(ft):2.3 4.0
Apron Length(ft):
Water Depth(ft): 0.01
Rustline Height(ft):1.9
Substrate Depth(ft):1.7 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.21
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.62
Culvert Gradient: 6.24%
Max Slope:
Max Slope Length:
 

Comments: Grade pipe 2 from invert in @ 1.2' inside pipe - past pile of gravel.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray
  4. Shallow fill; inadequate roadfill volume above culvert
  5. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 29.0 9.50
Upstream ordinary high water 69.0 8.00
Upstream ordinary high water 140.0 10.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev (outlet pool for both pipes) 99.16
U/S Headwater (turbulent) 101.94
D/S Grade Ctrl (Thalweg) (GP d/s) 0.00 51.0 96.65
D/S Water Surface Elev (WS @ GP) 0.00 51.0 96.93
D/S Water Surface Elev (WS @ GP) 26.00 25.0 103.74
D/S Water Surface Elev (WS @ TWC) 37.50 13.5 99.16
D/S Tailcrest or 1st Thalweg 37.50 13.5 98.89
D/S Thalweg (bottom of pool) 45.50 5.5 96.28
D/S Thalweg (bottom of plunge pool) 49.00 2.0 97.93
D/S Thalweg (pipe 2 streambed) 2 51.00 0.0 99.10
Outlet Invert 2 51.00 0.0 100.36
Outlet Invert 1 51.00 0.0 100.46
Road Elev 61.00 106.45
Inlet Culvert Invert (on pile of gravel @ inlet) 2 71.00 0.0 102.98
Inlet Culvert Invert (invert of pipe 2 @ 1.2' from inlet - past pile of gravel) 2 71.00 0.0 101.57
Inlet Culvert Invert 1 71.00 0.0 101.67
U/S Grade Ctrl (Thalweg) 96.00 25.0 103.47

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: Visual Observation, Ground (A)
Comments: Visual observation of what appear to be coho fry upstream and downstream from culvert

Fish Observations

No fish observations occurred during this survey.

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