Fish Passage Site 10302185

Coordinates (dec. deg.): 58.36345°, -134.58751°
Legal Description: C040S066E31
Region: Southeast
Road Name: Berners Avenue

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

Elevation:

Site Comments: No live fish observed or traps set as stream is already in the AWC. Ditched. Spawned out Pink/Chums observed upstream and downstream of culvert, carcasses. Approximately 100 feet upstream of GLH25.

Survey Date: Aug 25, 2011

Survey SEA11-BRA01

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. Constriction ratio red

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 92.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 14.0
Sedimentation At Inlet: No
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):7.5 7.5
Height(ft):6.3 6.1
Apron Length(ft):
Water Depth(ft): 3.64
Rustline Height(ft):3.3
Substrate Depth(ft):1.2 1.4
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.49
Culvert Gradient: 0.33%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.53
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 12.20
Upstream ordinary high water 61.0 17.40
Upstream ordinary high water 81.0 16.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 99.85
D/S Tailcrest or 1st Thalweg 0.00 90.57
D/S Water Surface Elev 0.00 92.15
Misc. (random pool depth, max at invert out) 21.00 88.83
Outlet Pool Water Elev 21.00 92.26
D/S Water Surface Elev 25.00 92.25
Outlet Thalweg 25.00 88.61
Outlet Culvert Top 25.00 94.65
Inlet Culvert Top 117.20 95.17
U/S Water Surface Elev 117.20 92.25
Inlet Thalweg 117.20 88.91
U/S Headwater 118.00 92.25
U/S Water Surface Elev 351.00 93.48

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: Spawned out chum and pink salmon observed upstream and downstream.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov