Fish Passage Site 20501243

Coordinates (dec. deg.): 61.76380°, -149.59566°
Legal Description: S019N002W02
Region: South Central
Road Name: Willow Fishhook Road

Datum: WGS84
Quad Name / ITM: Anchorage D-7
AWC Stream #:
Stream Name: Willow Creek tributary

Elevation:

Site Comments: None

Survey Date: Jul 29, 2009

Survey MSB09-WFR05

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. None of this type

Comments: Miter length = 6.5' at each end. ***Updated site photosadded from 9/16/16 site visit from Sampling Unmapped Streams in the MSB project. Fish sampling data from 9/16 and 9/20 in AFFI.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 60.5
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.5
Corrugation Width(in.): 9.0
Condition Rating(1-5): 4
Approach Angle: 2.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):8.2 8.2
Height(ft):6.4 6.4
Apron Length(ft):
Water Depth(ft): 1.16
Rustline Height(ft):2.0
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:
Culvert Gradient: 0.56%
Max Slope:
Max Slope Length:
 

Comments: Miter length = 6.5' at each end.
  Culvert Observations:
  1. None of this type

Stream Measurements

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

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (d/s WS) 1 0.00 55.0 95.14
Outlet Pool Water Elev 1 55.00 95.14
Outlet Invert (end of pipe - on substrate) 1 55.00 0.0 93.98
D/S Thalweg (invert @ top of miter) 1 61.50 -6.5 93.45
Road Elev 1 85.00 101.56
U/S Thalweg (invert @ top of miter (miter is 6.5' long)) 1 109.00 -6.5 93.77
Inlet Culvert Invert (end of pipe - on substrate) 1 115.50 0.0 94.32
U/S Headwater 1 115.50 95.14
U/S Grade Ctrl (Thalweg) (1st TC u/s) 1 117.50 2.0 94.67

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): 1.5
Comments: no fish caught; 50ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.5
Comments: no fish caught; 60ft d/s

Fish Observations

No fish observations occurred during this survey.

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