Fish Passage Site 40301670

Coordinates (dec. deg.): 68.08784°, -149.55466°
Legal Description: U016S011E03
Region: Interior
Road Name: Dalton Highway

Datum: NAD83
Quad Name / ITM: Philip Smith Mts A-5
AWC Stream #:
Stream Name: Chandalar River tributary

Elevation:

Site Comments: Mile 240 Dalton Highway;

Survey Date: Aug 11, 2010

Survey EDS10-DAL10

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height gray

Comments: Trib to Chandalar River. Braided U/S and D/S no stream widths.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 101.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 40.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):8.0 7.8
Height(ft):7.9 8.2
Apron Length(ft):
Water Depth(ft): 0.2
Rustline Height(ft):1.1
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.32
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 4.72%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 103.00
D/S Thalweg (max depth of outlet pool) 0.00 83.76
Outlet Pool Water Elev 0.00 87.26
Outlet Invert 4.00 87.38
D/S Water Surface Elev (ws @ outlet) 4.00 87.58
Outlet Culvert Top 4.00 95.65
Inlet Culvert Top 105.30 100.10
Inlet Culvert Invert 105.30 92.16
U/S Water Surface Elev (ws @ inlet) 105.30 92.82
U/S Grade Ctrl (Thalweg) (TC of 1st resting pool u/s) 147.30 94.49
U/S Water Surface Elev 147.30 94.97

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): 1.0
Comments: nothing caught
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: nothing caught

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)  

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