Fish Passage Site 10302162

Coordinates (dec. deg.): 58.35961°, -134.52292°
Legal Description: C040S066E33
Region: Southeast
Road Name: Lupine Drive

Datum: NAD83
Quad Name / ITM: Juneau B-2
AWC Stream #:
Stream Name: West Creek -DOT

Elevation:

Site Comments: None

Survey Date: Jul 07, 2011

Survey SEA11-SWV02

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Jason Olds, Charmagne Gutierrez, Gillian O'Doherty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Structural Problem

Comments: Observered unidentified salmonids near trap upstream from culvert. Did not take stream widths because stream was channelized.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated aluminum) Fish Passage Rating: Red
 
Length(ft): 60.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.33
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 4.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):5.8 6.0
Height(ft):3.3 3.2
Apron Length(ft):
Water Depth(ft): 0.17
Rustline Height(ft):
Substrate Depth(ft):0.7 0.3
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 2.81%
Max Slope:
Max Slope Length:
 

Comments: Visual observation salmonids upstream. Top of inlet crushed from snow removal. No stream grade OR stream widths: Channelized.

  Culvert Observations:
  1. Culvert gradient red
  2. Structural Problem

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:GravelGravel
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)
Road Elev 99.71
D/S Grade Ctrl (Thalweg) 0.00 90.72
D/S Water Surface Elev 0.00 91.06
D/S Water Surface Elev (tailwater surface) 14.00 91.58
D/S Water Surface Elev 15.00 91.59
Outlet Invert (on substrate) 15.00 91.42
U/S Water Surface Elev 76.00 93.63
Inlet Culvert Invert (on substrate) 76.00 93.13
U/S Headwater 76.50 93.60
U/S Grade Ctrl (Thalweg) 88.00 94.06
U/S Water Surface Elev (1st resting pool) 88.00 94.25

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: Trap set about 75 feet upstream from culvert below a waterfall.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Comments: Trap set about 200 feet upstream from culvert above waterfall.
 
Gear Type: Visual Observation, Ground (C)
Comments: 2 Dolly Varden seen about 20 feet upstream from culvert and estimate around 5 seen upstream above waterfall.

Fish Observations

Species: sculpin-unspecified Life History: Resident
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 70 Max: 70 Mean: 70
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  
 
Species: Dolly Varden Life History: Unknown
Total Fish Observed: 10 Fish Measured: 3 Fork Lengths (mm) Min: 0 Max: 850 Mean: 320
Collected/Observed by Gear Type: Upstream Visual Observation, Ground (8)  Upstream Minnow Trap (1)  Upstream Minnow Trap (1)  

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