Fish Passage Site 30303066

Coordinates (dec. deg.): 59.18454°, -158.66634°
Legal Description: S011S056W35
Region: Southwest
Road Name: Aleknagik Lake Road

Datum: NAD83
Quad Name / ITM: Dillingham A-8
AWC Stream #:
Stream Name: Wood River tributary

Elevation:

Site Comments: None

Survey Date: Sep 19, 2012

Survey SWA12-DIL04

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Gillian O'Doherty, Mark Eisenman

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 66.5
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 22.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):6.9 6.7
Height(ft):4.6 4.4
Apron Length(ft):
Water Depth(ft): 1.06
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.8
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.163
Culvert Gradient: 0.53%
Max Slope:
Max Slope Length:
 

Comments: Top of miter length = 55.5. Inlet has gravel through part of it, but invert is bare in parts. Creek water level high.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 53.0 6.50
Upstream ordinary high water 109.0 5.20
Upstream ordinary high water 132.0 6.10

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (side) 102.46
D/S Grade Ctrl (Thalweg) (riffle below culvert no outlet pool) 0.00 94.91
D/S Water Surface Elev 0.00 96.04
D/S Water Surface Elev 12.00 96.12
D/S Grade Ctrl (Thalweg) 12.00 95.19
Outlet Invert (on substrate) 22.00 95.06
D/S Water Surface Elev 22.00 96.12
Outlet Culvert Top (top of miter) 28.00 100.02
Inlet Culvert Top 83.50 100.31
U/S Water Surface Elev (resting hab at inlet) 89.50 96.29
Inlet Culvert Invert (on pipe or v. little substrate) 89.50 95.15
U/S Grade Ctrl (Thalweg) (riffle from inlet up to here) 109.50 95.95
U/S Water Surface Elev 109.50 96.40

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: No traps, set no fish observed.

Fish Observations

No fish observations occurred during this survey.

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