Fish Passage Site 10302241

Coordinates (dec. deg.): 58.43685°, -135.64516°
Legal Description: C040S059E03
Region: Southeast
Road Name: Wilson Road

Datum: NAD83
Quad Name / ITM: Juneau B-5
AWC Stream #:
Stream Name: Rink Creek

Elevation:

Site Comments: None

Survey Date: Aug 13, 2011

Survey SEA11-WLR03

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Constriction ratio gray

Comments: Nice fish habitat. Pool/Riffle continuous upstream and downstream. Fish observed upstream and downstream of culverts. On Steep Road to Falls Creek Hydro-electric dam and trailhead. No stream grade calculated, too much foilage.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 43.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 25.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 2.5
Height(ft):2.5 2.5
Apron Length(ft):
Water Depth(ft): 0.28
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.55
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.56
Culvert Gradient: -0.05%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Constriction ratio gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 43.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 25.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 2.5
Height(ft):2.5 2.5
Apron Length(ft):
Water Depth(ft): 0.16
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.35
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.56
Culvert Gradient: 0.66%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Constriction ratio gray
  3. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 50.0 6.20
Upstream ordinary high water 100.0 5.90
Upstream ordinary high water 150.0 6.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 101.50
D/S Grade Ctrl (Thalweg) 0.00 90.65
D/S Water Surface Elev 0.00 90.81
D/S Tailcrest or 1st Thalweg 18.00 90.68
D/S Water Surface Elev 18.00 91.29
Max Pool Depth 20.00 90.62
Outlet Pool Water Elev 20.00 91.28
Outlet Invert (C2) 2 23.00 91.47
D/S Water Surface Elev (C2) 2 23.00 91.63
Outlet Culvert Top (C2) 2 23.00 94.01
Outlet Culvert Top (C1) 1 25.00 94.15
D/S Water Surface Elev (C1) 1 25.00 91.83
Outlet Invert (C1) 1 25.00 91.55
Inlet Culvert Invert (C2) 2 66.80 91.76
U/S Water Surface Elev (C2) 2 66.80 92.01
Inlet Culvert Top (C2) 2 66.80 94.34
Inlet Culvert Top (C1) 1 68.90 94.17
U/S Water Surface Elev (C1) 1 68.90 91.93
Inlet Culvert Invert (C1) 1 68.90 91.53
U/S Headwater 70.00 92.27

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) Trap Duration(h): 0.25
Channel Type: Main Channel (>50% of water flow)
Comments: Visual juvenile fish observed upstream and dowstream of culvert.
 
Gear Type: Visual Observation, Ground (B) Trap Duration(h): 0.25
Channel Type: Main Channel (>50% of water flow)
Comments: Visual observations of juvenile fish

Fish Observations

Species: juvenile salmonid-unspecified Life History: Unknown
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 80 Max: 80 Mean: 80
Collected/Observed by Gear Type: Downstream Visual Observation, Ground (1)  Upstream Visual Observation, Ground (1)  

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