Fish Passage Site 40501713

Coordinates (dec. deg.): 65.21148°, -149.67845°
Legal Description: F005N010W31
Region: Interior
Road Name: Elliott Highway

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

Elevation:

Site Comments: None

Survey Date: Jul 09, 2010

Survey EDS10-ELH28

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Structural Problem
  2. Culvert gradient red
  3. Mechanical damage or joints parting
  4. Compound gradient in pipe

Comments: There is a compound gradient in this pipe. The max gradient appears to be at 13' from the inlet. The inlet is bent up and breaking apart. No stream widths were taken because it is braided downstream and a marsh upstream. This culvert probably has water due to beaver activity at ELH29, which is overflowing. No constriction ratio was calculated because no stream widths were taken.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 41.25
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 14.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.1 2.9
Height(ft):2.9 3.1
Apron Length(ft):
Water Depth(ft): 0.73
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 5.70%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Structural Problem
  2. Culvert gradient red
  3. Mechanical damage or joints parting
  4. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:OrganicCobble
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 (Road Surface) 102.39
D/S Water Surface Elev (Water Surface) 0.00 95.26
D/S Grade Ctrl (Thalweg) (Thalweg) 0.00 94.93
D/S Water Surface Elev (Water Surface) 10.00 95.89
D/S Tailcrest or 1st Thalweg (Thalweg) 10.00 95.52
Outlet Pool Water Elev 20.00 95.86
Max Pool Depth (greater than four feet) 31.00 4.00
D/S Water Surface Elev (Water Surface) 39.00 95.87
Outlet Invert (Bottom of Pipe) 39.00 95.14
Inlet Culvert Invert (Bottom of Pipe) 80.25 97.23
U/S Water Surface Elev (Water Surface) 80.25 97.61
U/S Headwater (Water Surface) 83.25 97.76
U/S Thalweg (Thalweg) 83.25 97.16

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): 1.08
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.08
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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