Fish Passage Site 10302179

Coordinates (dec. deg.): 58.38403°, -134.57708°
Legal Description: C040S066E19
Region: Southeast
Road Name: Duck Creek Loop

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

Elevation:

Site Comments: No fish observed or traps set as stream is already in the AWC. Too much foilage to find a stream gradient.

Survey Date: Aug 26, 2011

Survey SEA11-DCL01

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: Open-bottom arch (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 62.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 1.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: Organic
InletOutlet
Width(ft):13.0 13.0
Height(ft):3.7 3.4
Apron Length(ft):
Water Depth(ft): 1.96
Rustline Height(ft):2.2
Substrate Depth(ft):
Backwatered?: Yes
Baffles Present: No
Embedded?: Yes
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.48
Culvert Gradient: 0.05%
Max Slope:
Max Slope Length:
 

Comments: Tailwater control higher than inlet invert and water surface flat throughout pipe, site is backwatered.
  Culvert Observations:
  1. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 61.0 28.50
Upstream ordinary high water 95.0 21.40
Upstream ordinary high water 135.0 31.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.31
D/S Tailcrest or 1st Thalweg 0.00 94.24
D/S Water Surface Elev 0.00 95.94
Outlet Pool Water Elev 11.00 96.02
Max Pool Depth 11.00 93.02
Outlet Invert (On substrate) 19.00 94.07
D/S Water Surface Elev 19.00 96.03
U/S Water Surface Elev 81.70 96.05
Inlet Culvert Invert (On Substrate) 81.70 94.10
U/S Headwater 82.00 96.06
U/S Water Surface Elev 105.70 96.10
U/S Grade Ctrl (Thalweg) 105.70 94.62

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: None (A)
Comments: No traps set, no fish observed.

Fish Observations

No fish observations occurred during this survey.

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