Fish Passage Site 20501251

Coordinates (dec. deg.): 61.76249°, -149.49023°
Legal Description: S019N001W05
Region: South Central
Road Name: Willow Fishhook Road

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

Elevation:

Site Comments: None

Survey Date: Sep 09, 2009

Survey MSB09-WFR13

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. Constriction ratio red
  2. Culvert gradient red
  3. Outfall height red
  4. Inlet perch
  5. Compound gradient in pipe
  6. Shallow fill; inadequate roadfill volume above culvert

Comments: Inlet bent;inlet perch caused by 2 small boulders in inlet; compound gradient also because joint separating.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 29.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 2.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.6 5.0
Height(ft):5.1 5.0
Apron Length(ft):
Water Depth(ft): 0.53
Rustline Height(ft):2.2
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.53
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.34
Culvert Gradient: 3.38%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient red
  3. Outfall height red
  4. Inlet perch
  5. Compound gradient in pipe
  6. Shallow fill; inadequate roadfill volume above culvert

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:BoulderCobble
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 75.0 14.00
Upstream ordinary high water 120.0 13.00
Upstream ordinary high water 150.0 13.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 93.78
U/S Headwater 1 96.39
D/S Water Surface Elev (@GP) 1 0.00 15.0 93.61
D/S Grade Ctrl (Thalweg) 1 0.00 15.0 93.08
D/S Tailcrest or 1st Thalweg 1 5.00 10.0 93.18
D/S Water Surface Elev (@TWC) 1 5.00 10.0 93.78
D/S Thalweg (bottom of pool) 1 8.00 7.0 91.18
D/S Thalweg 1 15.00 0.0 92.89
Outlet Invert 1 15.00 0.0 93.78
Road Elev 1 29.50 100.84
Inlet Culvert Invert 1 44.90 0.0 94.79
U/S Grade Ctrl (Thalweg) 1 51.90 7.0 95.80
U/S Water Surface Elev (@GP) 1 51.90 7.0 96.68

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; 50ft d/s, in Willow Creek

Fish Observations

No fish observations occurred during this survey.

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