Fish Passage Site 40401780

Coordinates (dec. deg.): 65.60056°, -144.59912°
Legal Description: F009N015E15
Region: Interior
Road Name: Steese Highway

Datum: WGS84
Quad Name / ITM: Circle C-2
AWC Stream #:
Stream Name: Little Mosquito Creek

Elevation:

Site Comments: None

Survey Date: Jul 26, 2010

Survey EDS10-STS31

Observers: Ben Histand, Justin Leon

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Other, including vibrations, cavitation, etc.
  2. Constriction ratio red

Comments: The pipe at this culvert is submerged at the outlet and partially submerged at the inlet. This pipe is fully backwatered. Downstream widths were used because there is not much of a stream channel upstream. This pipe was rusted through. The rust line height was taken from the part of the pipe that was visibly more rusted than the rest of the pipe.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 43.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: Cobble
InletOutlet
Width(ft):2.9 2.5
Height(ft):3.0 1.4
Apron Length(ft):
Water Depth(ft): 1.51
Rustline Height(ft):2.9
Substrate Depth(ft):0.0 1.6
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.47
Culvert Gradient: 0.40%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Other, including vibrations, cavitation, etc.
  2. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 59.0 5.80
Downstream ordinary high water 91.0 4.20
Downstream ordinary high water 135.0 6.10

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 101.39
D/S Tailcrest or 1st Thalweg (Thalweg) 0.00 95.25
D/S Water Surface Elev (Water Surface) 0.00 95.53
D/S Water Surface Elev (Water Surface) 25.00 95.53
D/S Thalweg (Bottom of Outlet Pool) 25.00 92.17
Outlet Invert (On Substrate) 34.00 94.02
Outlet Culvert Top (Top of Pipe) 34.00 95.62
D/S Water Surface Elev (Water Surface) 34.00 95.53
U/S Water Surface Elev (Water Surface) 77.00 95.54
Inlet Culvert Top (Top of Pipe) 77.00 97.23
Inlet Culvert Invert (Bottom of Pipe) 77.00 94.19

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): 0.58
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.58
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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