Fish Passage Site 20401170

Coordinates (dec. deg.): 61.73028°, -149.04044°
Legal Description: S019N002E14
Region: South Central
Road Name: Buffalo Mine Road

Datum: WGS84
Quad Name / ITM: Anchorage C-6
AWC Stream #:
Stream Name: Moose Creek tributary

Elevation:

Site Comments: None

Survey Date: Sep 02, 2009

Survey MSB09-BMR02

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Constriction ratio gray
  3. Compound gradient in pipe
  4. Mechanical damage or joints parting
  5. Outfall height gray

Comments: Pipe Non-corregated metal pipe w/ corregated steel pipe extensions at ends; joints between sections badly separated w/hydraulic jumps; gray b/c non-standard pipe, but definitely a maintenace problem.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 28.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 21.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.3 3.3
Height(ft):3.4 3.4
Apron Length(ft):
Water Depth(ft): 0.4
Rustline Height(ft):0.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.09
Outfall Type: Hydraulic Jump
Constriction Ratio: 0.64
Culvert Gradient: 2.47%
Max Slope:
Max Slope Length:
 

Comments: Culvert is a 3.5 foot non-corregated metal pipe with corregated steel pipe extentions on the ends. Joints between pipes separating and making hydraulic jumps within the pipe.
  Culvert Observations:
  1. Culvert gradient red
  2. Constriction ratio gray
  3. Compound gradient in pipe
  4. Mechanical damage or joints parting
  5. Outfall height gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 100.0 6.00
Upstream ordinary high water 133.0 5.50
Upstream ordinary high water 195.0 4.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 96.21
U/S Headwater 1 97.09
D/S Grade Ctrl (Thalweg) 1 0.00 29.0 94.81
D/S Water Surface Elev (@GP) 1 0.00 29.0 95.28
D/S Grade Ctrl (Thalweg) 1 9.00 20.0 95.49
D/S Water Surface Elev (@GP) 1 9.00 20.0 95.89
D/S Thalweg (riffle) 1 24.00 5.0 95.44
D/S Thalweg 1 29.00 0.0 95.68
Outlet Invert 1 29.00 0.0 95.90
Road Elev 1 43.00 101.26
U/S Thalweg 1 57.70 0.0 96.51
Inlet Culvert Invert 1 57.70 0.0 96.61
U/S Grade Ctrl (Thalweg) 1 60.70 3.0 96.64
U/S Water Surface Elev (@GP) 1 60.70 3.0 97.18

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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