Fish Passage Site 20501459

Coordinates (dec. deg.): 62.28135°, -150.17917°
Legal Description: S025N005W03
Region: South Central
Road Name: Bradley

Datum: WGS84
Quad Name / ITM: Talkeetna B-1
AWC Stream #:
Stream Name: Susitna River tributary

Elevation:

Site Comments: None

Survey Date: Jun 04, 2009

Survey PRK09-BRD04

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. Culvert gradient red
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Hydraulic flows exceeded capacity

Comments: CR not considered b/c no defined channel but pipe is probably too small for volume of water

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 34.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 70.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):2.1 2.1
Height(ft):1.9 1.3
Apron Length(ft):
Water Depth(ft): 0.7
Rustline Height(ft):0.2
Substrate Depth(ft):0.0 0.55
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 2.43%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Shallow fill; inadequate roadfill volume above culvert

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 97.88
U/S Headwater 1 98.45
D/S Water Surface Elev (d/s WS) 1 0.00 90.0 97.55
D/S Water Surface Elev (ws @ TWC) 1 76.70 13.3 97.82
D/S Tailcrest or 1st Thalweg 1 76.70 13.3 97.46
D/S Thalweg 1 84.00 6.0 96.64
Outlet Invert 1 90.00 0.0 97.18
Road Elev 1 107.00 100.27
Inlet Culvert Invert 1 124.00 0.0 98.03
U/S Grade Ctrl (Thalweg) (grassy veg mat causes small drop into pipe) 1 124.10 0.1 98.16

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; 60ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: no fish caught; 200ft d/s

Fish Observations

No fish observations occurred during this survey.

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