Fish Passage Site 30303071

Coordinates (dec. deg.): 59.15233°, -158.63380°
Legal Description: S012S056W12
Region: Southwest
Road Name: Aleknagik Lake Road

Datum: NAD83
Quad Name / ITM: Dillingham A-8
AWC Stream #: 325-30-10100-2031-3029
Stream Name: Belt Creek

Elevation:

Site Comments: None

Survey Date: Sep 20, 2012

Survey SWA12-DIL09

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Culvert is poorly aligned

Comments: None

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 53.1
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 47.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: Gravel
InletOutlet
Width(ft):6.7 5.7
Height(ft):5.0 5.1
Apron Length(ft):
Water Depth(ft): 0.89
Rustline Height(ft):2.35
Substrate Depth(ft):0.0 0.1
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.26
Culvert Gradient: 1.26%
Max Slope:
Max Slope Length:
 

Comments: Top of miter length is 41.6 feet.
  Culvert Observations:
  1. Culvert gradient gray
  2. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandCobble
Stream Slope(deg.):0.64
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 65.0 5.20
Upstream ordinary high water 100.0 5.00
Upstream ordinary high water 175.0 5.70
Upstream ordinary high water 205.0 5.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.00
D/S Grade Ctrl (Thalweg) 0.00 89.99
D/S Water Surface Elev 0.00 91.14
D/S Grade Ctrl (Thalweg) 26.00 90.79
D/S Water Surface Elev 26.00 91.55
D/S Water Surface Elev 34.00 91.54
D/S Tailcrest or 1st Thalweg 34.00 90.71
Max Pool Depth 40.00 89.77
D/S Water Surface Elev 40.00 91.57
D/S Water Surface Elev 44.00 91.59
Outlet Invert (pipe) 44.00 90.70
Outlet Culvert Top (top of miter) 50.00 95.91
Inlet Culvert Top (top of miter) 91.60 96.27
U/S Water Surface Elev 97.60 91.94
Inlet Culvert Invert (pipe) 97.60 91.37
U/S Grade Ctrl (Thalweg) 113.60 91.42
U/S Water Surface Elev 113.60 92.03
U/S Water Surface Elev (sg) 167.60 92.09
U/S Water Surface Elev (sg) 289.60 92.87

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.

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