Fish Passage Site 10103607

Coordinates (dec. deg.): 55.70198°, -132.90286°
Legal Description: C071S082E19
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: Near MP 18.

Survey Date: Jul 22, 2017

Survey SEA17-NPW41

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Baffles in pipe, 1ft high baffle at outlet may be barrier, first resting at inlet, then shallow riffle followed by long glide, above this stream splits around gravel bar with large woody debris. Large woody debris forms 4ft high step in one channel and 5ft high step in other channel. Some nice pools with large woody debris upstream. Downstream flow through red alder to clearcut, has mix of large wood pools and riffles.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 108.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.2 6.4
Height(ft):5.1 6.15
Apron Length(ft):
Water Depth(ft): 0.33
Rustline Height(ft):0.4
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.45
Culvert Gradient: 8.12%
Max Slope:
Max Slope Length:
 

Comments: At grade, but 1ft drop at last baffle at outlet. Top of pipe length 93'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:BoulderBoulder
Stream Slope(deg.):3.4
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 40.0 2.00
Upstream ordinary high water 70.0 3.50
Upstream ordinary high water 90.0 2.10

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 116.27
D/S Grade Ctrl (Thalweg) 0.00 91.33
D/S Water Surface Elev 0.00 91.81
D/S Thalweg 16.00 91.90
D/S Water Surface Elev 16.00 92.42
D/S Tailcrest or 1st Thalweg 24.00 94.03
D/S Water Surface Elev 24.00 94.13
Max Pool Depth 32.00 93.56
D/S Water Surface Elev 32.00 94.25
Outlet Invert (on pipe) 34.00 93.87
D/S Water Surface Elev 34.00 94.20
Outlet Culvert Top 41.00 100.02
Inlet Culvert Top 134.00 107.76
Inlet Culvert Invert (on pipe) 142.00 102.65
U/S Water Surface Elev 142.00 102.90
U/S Grade Ctrl (Thalweg) 147.00 102.94
U/S Water Surface Elev 147.00 103.23
U/S Grade Ctrl (Thalweg) 213.00 104.48
U/S Water Surface Elev 213.00 104.96
U/S Thalweg (pool before LWD step) 227.00 104.96
U/S Water Surface Elev 227.00 105.95

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): 1.5
Comments: no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.5
Comments: no fish

Fish Observations

No fish observations occurred during this survey.

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