Fish Passage Site 60401661

Coordinates (dec. deg.): 70.17422°, -148.44550°
Legal Description: U010N015E31
Region: Arctic
Road Name: Dalton Highway

Datum: WGS84
Quad Name / ITM: Beechey Point A-3
AWC Stream #:
Stream Name: Sagavanirktok River tributary

Elevation:

Site Comments: DOT# 3118+53

Survey Date: Aug 06, 2010

Survey EDS10-DAL01

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Culvert gradient gray
  3. Culvert is poorly aligned

Comments: Many nine-spine sticklebacks seen upstream and downstream of this culvert. Concrete created channels at inlet and outlet. Approach angle too sharp.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 87.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 4
Approach Angle: 82.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):9.0 9.0
Height(ft):6.3 6.2
Apron Length(ft):
Water Depth(ft): 1.28
Rustline Height(ft):2.6
Substrate Depth(ft):0.0 0.0
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.36
Culvert Gradient: 1.28%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient gray
  3. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 96.0 23.20
Upstream ordinary high water 154.0 33.50
Upstream ordinary high water 374.0 18.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 107.33
D/S Grade Ctrl (Thalweg) (No Water Surface - Point is Dry) 0.00 95.04
D/S Tailcrest or 1st Thalweg (No Water Surface - Point is Dry) 108.00 94.81
D/S Water Surface Elev (Tailwater Surface - Max Pool Depth is greater than 5') 116.00 94.91
Outlet Culvert Top (Top of Pipe) 148.00 99.99
D/S Water Surface Elev (Water Surface) 148.00 94.90
Outlet Invert (Bottom of Pipe) 148.00 93.62
Inlet Culvert Invert (Bottom of Pipe) 235.20 94.74
U/S Water Surface Elev (Water Surface = Headwater Surface) 235.20 95.05
Inlet Culvert Top (Top of Pipe) 235.20 101.12
U/S Grade Ctrl (Thalweg) (Thalweg) 313.20 96.18
U/S Water Surface Elev (Water Surface) 313.20 96.34

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: Minnow Trap (A) Trap Duration(h): 1.17
Channel Type: Main Channel (>50% of water flow)
Comments: 3 nine-spine sticklebacks were caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.17
Channel Type: Main Channel (>50% of water flow)
Comments: 4 nine-spine sticklebacks were caught.

Fish Observations

Species: ninespine stickleback Life History: Resident
Total Fish Observed: 7 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (4)  Upstream Minnow Trap (3)  

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