Fish Passage Site 20501516

Coordinates (dec. deg.): 62.31506°, -150.19765°
Legal Description: S026N005W28
Region: South Central
Road Name: Susitna River Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-1
AWC Stream #:
Stream Name: Trapper Creek tributary

Elevation:

Site Comments: None

Survey Date: Jun 03, 2009

Survey PRK09-SRR01

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Compound gradient in pipe
  4. Woody Debris

Comments: Gray scum on water in d/s chan; u/s backed up by culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 52.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 31.0
Sedimentation At Inlet: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):3.0 2.9
Height(ft):1.85 3.0
Apron Length(ft):
Water Depth(ft): 1.08
Rustline Height(ft):1.3
Substrate Depth(ft):1.1 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.07
Culvert Gradient: 1.96%
Max Slope:
Max Slope Length:
 

Comments: pipe plugged w/organic matter 1/3-2/3 of height;
  Culvert Observations:
  1. Constriction ratio red
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Compound gradient in pipe
  4. Woody Debris

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 170.0 43.50
Downstream ordinary high water 274.0 44.00
Downstream ordinary high water 320.0 49.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 97.87
U/S Headwater 1 99.30
D/S Water Surface Elev (d/s WS) 1 0.00 88.0 97.87
Outlet Invert 1 88.00 0.0 96.79
Road Elev 114.00 101.94
Inlet Culvert Invert 1 140.00 0.0 97.82

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; 50ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: no fish caught; 50ft d/s

Fish Observations

No fish observations occurred during this survey.

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