Fish Passage Site 40501716

Coordinates (dec. deg.): 65.15834°, -150.18365°
Legal Description: F004N013W22
Region: Interior
Road Name: Elliott Highway

Datum: WGS84
Quad Name / ITM: Tanana A-1
AWC Stream #:
Stream Name: Kentucky Creek

Elevation:

Site Comments: None

Survey Date: Jul 10, 2010

Survey EDS10-ELH31

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Road bank erosion
  2. Culvert gradient red

Comments: This is a fairly new embedded culvert. The water is collecting to the left of the pipe against the headwall at the inlet. The stream is split coming into the pipe because of an island of substrate in front of the pipe.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 115.7
Inlet Type: Headwall
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 5
Approach Angle: 59.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):6.9 7.2
Height(ft):5.3 4.4
Apron Length(ft):
Water Depth(ft): 0.49
Rustline Height(ft):1.2
Substrate Depth(ft):1.7 2.6
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.7
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.17
Culvert Gradient: 2.02%
Max Slope:
Max Slope Length:
 

Comments: The rust line height was measured from the substrate to the rust line. Stream gradient is 2.26%.
  Culvert Observations:
  1. Road bank erosion
  2. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelCobble
Subdominant:CobbleGravel
Stream Slope(deg.):2.26
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 51.0 5.10
Upstream ordinary high water 75.0 6.80
Upstream ordinary high water 111.0 6.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 110.35
D/S Grade Ctrl (Thalweg) (Thalweg) 0.00 91.10
D/S Water Surface Elev (Water Surface) 0.00 91.53
D/S Tailcrest or 1st Thalweg (Thalweg) 23.00 92.34
D/S Water Surface Elev (Water Surface) 23.00 92.79
D/S Water Surface Elev (Water Surface) 29.00 92.84
Outlet Invert (Substrate/Thalweg) 29.00 92.35
Outlet Culvert Top (Top of Pipe) 29.00 96.72
Inlet Culvert Top (Top of Pipe) 144.70 99.06
Inlet Culvert Invert (Substrate) 144.70 93.69
U/S Water Surface Elev (Water Surface) 144.70 93.96
U/S Headwater (Water Surface) 151.70 94.16
U/S Thalweg (Thalweg) 151.70 93.77
U/S Grade Ctrl (Thalweg) (Thalweg) 179.70 94.53
U/S Water Surface Elev (Water Surface) 179.70 94.87
U/S Grade Ctrl (Thalweg) (Thalweg) 261.70 95.01
U/S Water Surface Elev (Water Service) 261.70 95.39
U/S Grade Ctrl (Thalweg) (Thalweg) 302.70 95.84
U/S Water Surface Elev (Water Surface) 302.70 96.32

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): 1.16
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.17
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was 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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