Fish Passage Site 40501710

Coordinates (dec. deg.): 65.38326°, -148.94109°
Legal Description: F007N007W35
Region: Interior
Road Name: Elliott Highway

Datum: WGS84
Quad Name / ITM: Livengood B-4
AWC Stream #:
Stream Name:

Elevation:

Site Comments: None

Survey Date: Jul 07, 2010

Survey EDS10-ELH25

Observers: Mark Eisenman, 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. Inlet perch
  4. Road bank erosion
  5. Woody Debris
  6. Constriction ratio gray

Comments: This culvert has 2 pipes. Both are clogged with woody debris in front of the inlet. There are big inlet perches. The water at the site is shallow, but it still flows above the inlet of the pipe. It is possible that each pipe is made up of 2 pipes. There is a compound gradient inside both pipes, but pipes were too small to measure.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 112.3
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.0 3.9
Height(ft):2.1 3.5
Apron Length(ft):
Water Depth(ft): 0.56
Rustline Height(ft):
Substrate Depth(ft):2.0 0.4
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.5
Culvert Gradient: 3.18%
Max Slope:
Max Slope Length:
 

Comments: The max gradient could not be calculated. The rust line height could not be attained because it could not be reached inside the pipe as well.
  Culvert Observations:
  1. Compound gradient in pipe
  2. Culvert gradient red
  3. Inlet perch
  4. Road bank erosion
  5. Woody Debris
  6. Constriction ratio gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 112.5
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: None
InletOutlet
Width(ft):3.8 3.9
Height(ft):2.3 4.0
Apron Length(ft):
Water Depth(ft): 1.5
Rustline Height(ft):
Substrate Depth(ft):1.7 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.58
Culvert Gradient: 3.78%
Max Slope:
Max Slope Length:
 

Comments: The max gradient could not be calculated. The rust line height could not be reached inside the pipe as well.
  Culvert Observations:
  1. Compound gradient in pipe
  2. Culvert gradient red
  3. Inlet perch
  4. Road bank erosion
  5. Woody Debris
  6. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 36.0 8.80
Upstream ordinary high water 76.0 8.40
Upstream ordinary high water 110.0 11.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 123.32
D/S Water Surface Elev (Water Surface) 0.00 96.49
D/S Thalweg (Thalweg) 0.00 95.95
D/S Tailcrest or 1st Thalweg (Thalweg) 11.00 96.27
D/S Water Surface Elev (Water Surface) 11.00 96.69
D/S Water Surface Elev (Water Surface) 2 25.00 96.73
D/S Water Surface Elev (Water Surface) 1 25.00 96.73
Outlet Culvert Top (Top of Pipe) 2 25.00 99.29
Outlet Culvert Top (Top of Pipe) 1 25.00 99.74
Outlet Invert (Bottom of Pipe) 2 25.00 95.23
Outlet Invert (Substrate) 1 25.00 96.17
U/S Water Surface Elev (Water Surface) 1 138.00 101.58
U/S Water Surface Elev (Water Surface) 2 138.00 101.67
Inlet Culvert Invert (Substrate) 2 138.00 101.26
Inlet Culvert Invert (Substrate) 1 138.00 101.34
Inlet Culvert Top (Top of Pipe) 1 138.00 103.31
Inlet Culvert Top (Top of Pipe) 2 138.00 103.54
U/S Thalweg (Substrate) 142.00 101.54
U/S Headwater (Water Surface) 142.00 101.88
U/S Water Surface Elev (Water Surface) 177.00 102.25
U/S Thalweg (Thalweg) 177.00 101.53

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): 2.0
Channel Type: Main Channel (>50% of water flow)
Comments: No fish were caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Channel Type: Main Channel (>50% of water flow)
Comments: No fish were 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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