Fish Passage Site 10302187

Coordinates (dec. deg.): 58.36477°, -134.58928°
Legal Description: C040S066E31
Region: Southeast
Road Name: Mendenhall Loop Road

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

Elevation:

Site Comments: None

Survey Date: Aug 25, 2011

Survey SEA11-GLH26

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: No live fish were observed and no traps were set as stream is already in the AWC. Spawned out Pink/Chum carcasses upstream and downstream of culvert. Ditched.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 50.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 10.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):7.5 7.5
Height(ft):4.0 4.6
Apron Length(ft):
Water Depth(ft): 3.63
Rustline Height(ft):2.5
Substrate Depth(ft):3.5 2.9
Backwatered?: Yes
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 2.9
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.93%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:SandSand
Stream Slope(deg.):0.17
Stream Flow Stage:High

No stream width data available.

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 99.96
D/S Tailcrest or 1st Thalweg 0.00 93.44
D/S Water Surface Elev 0.00 96.50
Max Pool Depth 4.00 93.12
Outlet Pool Water Elev 4.00 96.49
Outlet Culvert Top 11.00 97.49
Outlet Invert (On substrate) 11.00 92.88
D/S Water Surface Elev 11.00 96.51
U/S Water Surface Elev 61.20 96.50
Inlet Culvert Invert (On substrate) 61.20 93.85
Inlet Culvert Top 61.20 97.93
U/S Headwater 62.00 96.52
U/S Water Surface Elev 158.00 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: Visual Observation, Ground (A)
Comments: Pink and Chum salmon carcasses observed up and downstream from culvert site.

Fish Observations

Species: carcass chum salmon Life History: Anadromous
Total Fish Observed: 4 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (4)  
 
Species: carcass pink salmon Life History: Anadromous
Total Fish Observed: 4 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (4)  

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