Fish Passage Site 10103588

Coordinates (dec. deg.): 55.74686°, -132.97406°
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: Jun 29, 2017

Survey SEA17-NPW22

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Nice habitat upstream, step pools, steeper gradient. Small fish observed upstream, none caught. Downstream mostly low gradient riffle, lots of gravel, a few deep pools, not much woody debris. Downstream gradient surveyed as less brush. Similar gradient upstream and downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 84.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 30.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Gravel
InletOutlet
Width(ft):9.9 10.0
Height(ft):8.5 8.0
Apron Length(ft):
Water Depth(ft): 0.15
Rustline Height(ft):2.5
Substrate Depth(ft):1.5 2.0
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.36
Culvert Gradient: 4.16%
Max Slope:
Max Slope Length:
 

Comments: Pretty rusty below waterline. Pipe gradient close to gradient of stream. Long 14ft mitres. Culvert does not have complete bedload coverage thoughout pipe, it is not embedded. Baffles appear to be holding or capturing sediment and culvert is set to within 1% of stream gradient. Top of culvert length 56'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelCobble
Subdominant:CobbleGravel
Stream Slope(deg.):3.4
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 65.0 8.50
Downstream ordinary high water 100.0 8.00
Downstream ordinary high water 140.0 7.75
Upstream ordinary high water 60.0 8.00
Upstream ordinary high water 80.0 7.30
Upstream ordinary high water 100.0 6.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 115.03
D/S Grade Ctrl (Thalweg) 0.00 96.25
D/S Water Surface Elev 0.00 96.50
D/S Grade Ctrl (Thalweg) 43.00 97.96
D/S Water Surface Elev 43.00 98.26
D/S Grade Ctrl (Thalweg) 115.00 99.99
D/S Water Surface Elev 115.00 100.24
D/S Grade Ctrl (Thalweg) 125.00 100.54
D/S Water Surface Elev 125.00 100.71
Outlet Invert (end of mitre, on substrate) 132.00 101.31
D/S Water Surface Elev 132.00 101.46
Outlet Culvert Top 146.00 109.43
Inlet Culvert Top 202.00 111.78
Inlet Culvert Invert (end of mitre, on substrate) 216.00 104.27
U/S Water Surface Elev 216.00 104.43
U/S Grade Ctrl (Thalweg) 219.00 104.59
U/S Water Surface Elev 219.00 104.96
U/S Grade Ctrl (Thalweg) 244.00 106.16
U/S Water Surface Elev 244.00 106.74

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, no fish
 
Gear Type: Visual Observation, Ground (C)
Comments: Small fish observed upstream of culvert

Fish Observations

No fish observations occurred during this survey.

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