Fish Passage Site 10103603

Coordinates (dec. deg.): 55.71682°, -132.92233°
Legal Description: C071S081E13
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 21, 2017

Survey SEA17-NPW37

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Steep cascades upstream, first resting at inlet. Downstream has nice low gradient riffle and glides. 4ft high large woody debris step about 80ft downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 87.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 20.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Boulder
InletOutlet
Width(ft):8.0 8.0
Height(ft):8.0 8.0
Apron Length(ft):
Water Depth(ft): 0.9
Rustline Height(ft):5.56
Substrate Depth(ft):
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.0
Culvert Gradient: 8.98%
Max Slope:
Max Slope Length:
 

Comments: Through pipe gradient given, measured on pipe. Top of culvert length 74'. Some scattered substrate at inverts.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):9.15
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 4.50
Upstream ordinary high water 60.0 4.00
Upstream ordinary high water 90.0 3.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 104.86
D/S Grade Ctrl (Thalweg) 0.00 83.42
D/S Water Surface Elev 0.00 83.85
D/S Water Surface Elev 17.00 84.01
D/S Grade Ctrl (Thalweg) (trap pool) 17.00 82.85
D/S Tailcrest or 1st Thalweg (boulders) 39.00 85.81
D/S Water Surface Elev 39.00 86.04
D/S Water Surface Elev 48.00 86.03
Outlet Invert (on pipe) 48.00 85.18
Outlet Culvert Top 53.00 93.15
Inlet Culvert Top 127.00 99.87
U/S Water Surface Elev 135.00 93.28
Inlet Culvert Invert (on pipe) 135.00 92.99
U/S Grade Ctrl (Thalweg) (First resting) 144.00 94.09
U/S Water Surface Elev 144.00 94.98
U/S Grade Ctrl (Thalweg) 173.00 95.62
U/S Water Surface Elev 173.00 95.84
U/S Grade Ctrl (Thalweg) 190.00 98.97
U/S Water Surface Elev 190.00 99.19

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): 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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