Fish Passage Site 10103592

Coordinates (dec. deg.): 55.74053°, -132.96930°
Legal Description: C071S081E03
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 12, 2017

Survey SEA17-NPW26

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray

Comments: Upstream channel splits right above culvert. First resting just above inlet. Channels upstream much narrower than downstream. Downstream has nice gravel riffles, a few large woody debris steps. Rusty orange tributary about 1ft wide comes in from south about 50ft downstream. 1 cutthroat caught in plunge pool.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 69.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 8.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 3.1
Apron Length(ft):
Water Depth(ft): 0.13
Rustline Height(ft):0.75
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.67
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.71
Culvert Gradient: 8.61%
Max Slope:
Max Slope Length:
 

Comments: Used downstream average width for constriction as channel split upstream. Top of culvert length 60'.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Cobble
Stream Slope(deg.):12.12
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 50.0 4.40
Downstream ordinary high water 75.0 4.20
Downstream ordinary high water 100.0 4.00
Upstream ordinary high water 30.0 2.75
Upstream ordinary high water 50.0 3.75
Upstream ordinary high water 60.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 103.56
D/S Grade Ctrl (Thalweg) 0.00 84.83
D/S Water Surface Elev 0.00 85.32
D/S Grade Ctrl (Thalweg) 6.00 85.57
D/S Water Surface Elev 6.00 86.36
D/S Tailcrest or 1st Thalweg (boulders) 51.00 90.80
D/S Water Surface Elev 51.00 90.89
Max Pool Depth 55.00 89.20
D/S Water Surface Elev 55.00 89.82
Outlet Invert (on pipe) 66.00 91.36
D/S Water Surface Elev 66.00 91.49
Outlet Culvert Top 70.00 94.80
Inlet Culvert Top 130.00 100.00
Inlet Culvert Invert (on pipe) 135.00 97.30
U/S Water Surface Elev 135.00 97.43
U/S Grade Ctrl (Thalweg) 139.00 97.62
U/S Water Surface Elev 139.00 97.67
U/S Grade Ctrl (Thalweg) 179.00 98.82
U/S Water Surface Elev 179.00 98.97
U/S Grade Ctrl (Thalweg) 201.00 99.88
U/S Water Surface Elev 201.00 100.02

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): 1.2
Comments: 20ft upstream no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.3
Comments: 10ft downstream, 1 cutthroat

Fish Observations

Species: juvenile cutthroat trout Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 120 Max: 120 Mean: 120
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  

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