Fish Passage Site 10103606

Coordinates (dec. deg.): 55.70643°, -132.90585°
Legal Description: C071S082E18
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 22, 2017

Survey SEA17-NPW40

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Upstream has cascades and step pools, two dollys captured upstream, downstream is shallow, steep riffle, shallow pools, twisty channel. Baffles.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 127.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 4.0
Condition Rating(1-5): 3
Approach Angle: 15.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Gravel
InletOutlet
Width(ft):5.3 5.0
Height(ft):4.8 4.0
Apron Length(ft):
Water Depth(ft): 0.88
Rustline Height(ft):3.1
Substrate Depth(ft):0.5 1.0
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.35
Culvert Gradient: 11.25%
Max Slope:
Max Slope Length:
 

Comments: Too brushy for stream gradient. Large woody debris caught at inlet baffle. Top of culvert length 107'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 4.20
Upstream ordinary high water 50.0 4.00
Upstream ordinary high water 70.0 3.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 121.05
D/S Grade Ctrl (Thalweg) 0.00 90.84
D/S Water Surface Elev 0.00 91.16
D/S Thalweg 17.00 91.32
D/S Water Surface Elev 17.00 92.69
D/S Tailcrest or 1st Thalweg 26.00 94.97
D/S Water Surface Elev 26.00 95.38
D/S Water Surface Elev 32.00 95.62
Outlet Invert (in pool, on substrate) 32.00 94.74
Outlet Culvert Top 42.00 100.00
Inlet Culvert Top 149.00 112.04
Inlet Culvert Invert 159.00 108.78
U/S Water Surface Elev 159.00 109.02
U/S Grade Ctrl (Thalweg) 166.00 109.44
U/S Water Surface Elev 166.00 109.70
U/S Water Surface Elev (too brushy beyond) 178.00 110.05
U/S Grade Ctrl (Thalweg) 178.00 110.73

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): 2.1
Comments: two dollys 20ft upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.9
Comments: no fish

Fish Observations

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 120 Max: 145 Mean: 132
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  

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