Fish Passage Site 40501714

Coordinates (dec. deg.): 65.21199°, -149.68169°
Legal Description: F005N010W31
Region: Interior
Road Name: Elliott Highway

Datum: WGS84
Quad Name / ITM: Livengood A-6
AWC Stream #:
Stream Name:

Elevation:

Site Comments: None

Survey Date: Jul 09, 2010

Survey EDS10-ELH29

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Beaver Activity
  2. Woody Debris
  3. Road bank erosion
  4. Structural Problem
  5. Inlet perch
  6. Constriction ratio red

Comments: Two pipes. Outlets appear to have been repaired or this may be an apron. Both pipes are severely clogged with woody debris. Rust lines for both are indiscernable. C2 is almost completely overgrown at the inlet. Measurements may not be accurate for this pipe. For this reason a longitudinal profile for C2 could not be completed. There is also a new beaver dam about 150' upstream from this culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 44.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 9.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: None
InletOutlet
Width(ft):2.0 4.0
Height(ft):1.6 4.1
Apron Length(ft): 2.0
Water Depth(ft): 0.87
Rustline Height(ft):
Substrate Depth(ft):2.4 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.25
Culvert Gradient: 0.20%
Max Slope:
Max Slope Length:
 

Comments: The apron length is the length of the pipe that might be an apron. Culvert gradient taken from TOP..
  Culvert Observations:
  1. Beaver Activity
  2. Woody Debris
  3. Road bank erosion
  4. Structural Problem
  5. Inlet perch
  6. Constriction ratio red
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft):
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 1
Approach Angle: 9.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: None
InletOutlet
Width(ft):1.4 4.0
Height(ft):1.9 3.9
Apron Length(ft): 2.0
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft): 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.25
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: The apron length is the length of the pipe that might be an apron. The measurements that were not calculated were because this pipe was severely clogged and overgrown. A longitudinal profile could not be completed on this pipe.
  Culvert Observations:
  1. Beaver Activity
  2. Woody Debris
  3. Road bank erosion
  4. Structural Problem
  5. Inlet perch
  6. Constriction ratio red

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 47.0 7.80
Upstream ordinary high water 82.0 9.30
Upstream ordinary high water 140.0 12.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 103.04
D/S Grade Ctrl (Thalweg) (Thalweg) 0.00 95.46
D/S Water Surface Elev (Water Surface) 0.00 95.93
D/S Tailcrest or 1st Thalweg (Thalweg) 38.00 96.32
D/S Water Surface Elev (Water Surface) 38.00 96.70
Outlet Pool Water Elev 54.00 96.72
Max Pool Depth 54.00 95.47
Misc. (End of Apron C1 - Bottom of Pipe) 58.00 96.08
D/S Water Surface Elev (End of Apron C1 - Water Surface) 58.00 96.75
D/S Water Surface Elev (Water Surface) 60.00 96.80
Outlet Culvert Top (Top of Pipe) 60.00 100.00
Outlet Invert (Bottom of Pipe) 60.00 95.93
Inlet Culvert Top (Top of Pipe of C1) 104.20 99.91
Inlet Culvert Invert (Substrate of C1) 104.20 98.19
U/S Water Surface Elev (Water Surface of C1) 104.20 98.37
U/S Thalweg (Substrate) 115.20 98.46
U/S Headwater (Water Surface) 115.20 98.72

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): 2.33
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.33
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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