Fish Passage Site 10302177

Coordinates (dec. deg.): 58.38950°, -134.57533°
Legal Description: C040S066E19
Region: Southeast
Road Name: Duran Street

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

Elevation:

Site Comments: Near intersection of Duran & Duran.

Survey Date: Aug 26, 2011

Survey SEA11-RIO01

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: No fish were observed and no traps were set as stream is already in the AWC.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 47.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: Cobble
InletOutlet
Width(ft):4.0 4.0
Height(ft):3.1 2.2
Apron Length(ft):
Water Depth(ft): 1.38
Rustline Height(ft):2.6
Substrate Depth(ft):0.9 1.8
Backwatered?: Yes
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 0.9
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.25
Culvert Gradient: -0.56%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicCobble
Subdominant:CobbleSilt/Clay
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 61.0 13.20
Downstream ordinary high water 91.0 16.10
Downstream ordinary high water 127.0 19.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.20
Misc. (no discernable grade points) 0.00 93.49
D/S Water Surface Elev 0.00 95.35
D/S Water Surface Elev 25.00 95.39
D/S Tailcrest or 1st Thalweg 25.00 94.29
Outlet Invert (On substrate) 30.00 94.05
D/S Water Surface Elev 30.00 95.43
Outlet Culvert Top 30.00 96.25
Inlet Culvert Top 77.90 96.90
Inlet Culvert Invert (On substrate) 77.90 93.78
U/S Water Surface Elev 77.90 95.42
U/S Headwater 78.00 95.42

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