Fish Passage Site 20501239

Coordinates (dec. deg.): 61.77201°, -149.80711°
Legal Description: S019N003W03
Region: South Central
Road Name: Willow Fishhook Road

Datum: WGS84
Quad Name / ITM: Anchorage D-8
AWC Stream #:
Stream Name: Willow Creek tributary

Elevation:

Site Comments: trib to AWC;

Survey Date: Jul 28, 2009

Survey MSB09-WFR01

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Beaver Activity
  4. Compound gradient in pipe

Comments: Trib to AWC; compound grade from joints starting to separate in pipe. **Updated site photos added from 9/16/16 site visit from Sampling Unmapped Streams in the MSB project. Fish sampling informaiton entered into AFFI.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 111.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 28.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft): 0.12
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.4
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.8
Culvert Gradient: 2.32%
Max Slope:
Max Slope Length:
 

Comments: trib to AWC; compound grade from joints starting to separate in pipe
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Beaver Activity
  4. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 35.0 7.00
Downstream ordinary high water 65.0 5.00
Downstream ordinary high water 100.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Grade Ctrl (Thalweg) 1 0.00 23.0 94.43
D/S Water Surface Elev (@GP) 1 0.00 23.0 94.61
D/S Tailcrest or 1st Thalweg 1 17.00 6.0 95.46
D/S Water Surface Elev (@TWC) 1 17.00 6.0 95.68
D/S Thalweg (bottom of pool) 1 21.00 2.0 94.87
D/S Thalweg 1 23.00 0.0 95.32
Outlet Pool Water Elev 1 23.00 0.0 95.69
Outlet Invert 1 23.00 0.0 95.97
Road Elev (u/s edge of pavement) 1 78.50 122.81
U/S Headwater 1 134.50 0.0 98.80
Inlet Culvert Invert 1 134.50 0.0 98.56
U/S Grade Ctrl (Thalweg) 1 144.00 9.5 98.69
U/S Water Surface Elev (@GP) 1 144.00 9.5 98.93

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): 2.0
Comments: no fish caught; 100ft u/s; in beaver pond
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Comments: no fish caught; 50ft d/s

Fish Observations

No fish observations occurred during this survey.

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