Fish Passage Site 10103596

Coordinates (dec. deg.): 55.72612°, -132.94298°
Legal Description: C071S081E11
Region: Southeast
Road Name: North Prince of Wales Road

Datum: NAD83
Quad Name / ITM: Craig C-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jul 13, 2017

Survey SEA17-NPW30

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: At 800ft summit of road. Upstream has fast riffles with a few pools, no large woody debris. Downstream has a 4ft high step over logs 50ft from outlet then very brushy. Cutthroat trout in downstream trap plus another larger fish observed in same pool.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 101.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 3.4
Condition Rating(1-5): 3
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.56 4.9
Height(ft):4.32 3.1
Apron Length(ft):
Water Depth(ft): 0.38
Rustline Height(ft):0.22
Substrate Depth(ft):0.24 1.8
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.53
Culvert Gradient: 4.23%
Max Slope:
Max Slope Length:
 

Comments: Top of culvert length 83'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:
Stream Slope(deg.):3.95
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 2.00
Upstream ordinary high water 60.0 1.50
Upstream ordinary high water 90.0 1.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 105.21
D/S Grade Ctrl (Thalweg) 0.00 89.47
D/S Water Surface Elev 0.00 91.10
D/S Water Surface Elev 23.00 91.93
D/S Tailcrest or 1st Thalweg 23.00 91.52
D/S Water Surface Elev 26.00 91.80
Max Pool Depth 26.00 91.06
Outlet Invert (end of mitre) 37.00 91.45
D/S Water Surface Elev 37.00 91.83
D/S Grade Ctrl (Thalweg) (top of baffle) 39.00 92.09
D/S Water Surface Elev 39.00 92.34
Outlet Culvert Top 46.00 96.49
Inlet Culvert Top 129.00 100.00
Inlet Culvert Invert (end of mitre) 138.00 95.90
U/S Water Surface Elev 138.00 96.13
U/S Water Surface Elev 144.00 96.30
U/S Grade Ctrl (Thalweg) 144.00 96.04
U/S Grade Ctrl (Thalweg) 175.00 97.01
U/S Water Surface Elev 175.00 97.40
U/S Water Surface Elev 181.00 97.53
U/S Grade Ctrl (Thalweg) 181.00 96.70
U/S Grade Ctrl (Thalweg) 208.00 98.30
U/S Water Surface Elev 208.00 98.83

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
Comments: 20ft upstream, no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Comments: 20ft downstream, 1 rainbow
 
Gear Type: Visual Observation, Ground (C)
Comments: Unidentified fish observed near trap.

Fish Observations

Species: juvenile cutthroat trout Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 72 Max: 72 Mean: 72
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  

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