Fish Passage Site 20401169

Coordinates (dec. deg.): 61.71027°, -149.09184°
Legal Description: S019N002E28
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

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey MSB09-BMR01

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. Culvert gradient red
  2. Outfall height red
  3. Culvert is poorly aligned

Comments: Outfall is freefall onto cascade over SC; u/s and d/s are steep grade w/cascades and small drops. Site visit photos from 9/6/16 sampling for Sampling Unmapped Streams in the MSB project added, fish sampling information added as well.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 43.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 54.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft): 0.19
Rustline Height(ft):0.7
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 3.45
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.75
Culvert Gradient: 14.50%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Culvert is poorly aligned
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 42.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 54.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.7 2.0
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft): 0.14
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 3.46
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.75
Culvert Gradient: 14.80%
Max Slope:
Max Slope Length:
 

Comments: Outfall is freefall onto cascade over SC; inlet 2 bent/twisted at top. u/s and d/s are steep grade
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 52.0 4.00
Upstream ordinary high water 90.0 3.00
Upstream ordinary high water 125.0 3.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Headwater 1 98.38
U/S Headwater 2 98.39
D/S Grade Ctrl (Thalweg) 0.00 22.0 87.51
D/S Water Surface Elev (@GP) 0.00 22.0 88.04
D/S Grade Ctrl (Thalweg) (TC of outlet pool) 8.00 14.0 88.16
D/S Water Surface Elev 10.00 12.0 88.49
D/S Thalweg 10.00 12.0 87.79
D/S Thalweg (both pipes) 19.50 2.5 89.62
D/S Thalweg (bottom of plunge, pipe 1) 1 20.00 2.0 89.82
D/S Thalweg (bottom of plunge, pipe 2) 2 21.00 1.0 90.77
Outlet Invert 1 22.00 0.0 91.75
Outlet Invert 2 22.00 0.0 91.81
Road Elev 43.00 102.11
U/S Thalweg 2 64.80 0.0 98.02
Inlet Culvert Invert 2 64.80 0.0 98.13
Inlet Culvert Invert 1 65.10 0.0 97.98
U/S Thalweg 71.10 6.0 98.15
U/S Grade Ctrl (Thalweg) (constructed TC, controls pool u/s) 73.10 8.0 98.62
D/S Water Surface Elev (@GP) 73.10 8.0 99.06

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; 40ft u/s
 
Gear Type: Minnow Trap (B)
Comments: no fish caught;; 60ft d/s

Fish Observations

No fish observations occurred during this survey.

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