Fish Passage Site 40401779

Coordinates (dec. deg.): 65.55721°, -145.09119°
Legal Description: F009N013E32
Region: Interior
Road Name: Steese Highway

Datum: WGS84
Quad Name / ITM: Circle C-3
AWC Stream #:
Stream Name: Bedrock Creek

Elevation:

Site Comments: DOT# 526+40

Survey Date: Jul 26, 2010

Survey EDS10-STS30

Observers: Ben Histand, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Compound gradient in pipe
  2. Culvert gradient red
  3. Outfall height red
  4. Outlet apron too steep
  5. Constriction ratio gray

Comments: Water is piling up to the right of the inlet of this pipe. Water is rushing into the pipe. Arctic Char were seen downstream by both surveyors. The apron at the outlet of this pipe is bent down severely.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Red
 
Length(ft): 59.6
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 20.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.0 6.0
Height(ft):5.8 5.6
Apron Length(ft):7.5 7.5
Water Depth(ft): 0.56
Rustline Height(ft):3.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.32
Outfall Type: Smooth Flow Over Apron
Constriction Ratio: 0.71
Culvert Gradient: 3.59%
Max Slope: 19.33
Max Slope Length: 7.5
  Culvert Observations:
  1. Compound gradient in pipe
  2. Culvert gradient red
  3. Outfall height red
  4. Outlet apron too steep
  5. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 50.0 9.30
Upstream ordinary high water 132.0 9.60
Upstream ordinary high water 206.0 6.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (Tailcrest of Pool in Riffle Downstream) 0.00 99.08
D/S Water Surface Elev (Water Surface) 0.00 99.31
D/S Water Surface Elev (Water Surface) 25.00 99.79
D/S Tailcrest or 1st Thalweg (Thalweg) 25.00 99.18
D/S Thalweg (Bottom of Large Outlet Pool) 46.00 96.92
D/S Water Surface Elev (Tailwater Surface) 52.00 99.81
Misc. (2.5' Down From End of Apron) 53.00 96.62
Misc. (End of Apron) 53.00 99.12
Outlet Invert (Bottom of Pipe) 60.50 100.57
D/S Water Surface Elev (Water Surface - Turbulent) 60.50 101.13
Inlet Culvert Invert (Bottom of Pipe) 120.00 102.71
U/S Water Surface Elev (Water Surface - Turbulent) 120.00 103.26
U/S Headwater (= Water Surface at the End of Apron) 127.50 103.31
Misc. (End of Apron) 127.50 102.82

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): 1.75
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.75
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Visual Observation, Ground (C)
Comments: Arctic Char/Dolley Varden seen downstream by both surveyors.

Fish Observations

Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: 0 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (0)  Upstream Minnow Trap (0)  
 
Species: Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Visual Observation, Ground (2)  

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