Fish Passage Site 10103590

Coordinates (dec. deg.): 55.74306°, -132.97127°
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: Near MP 22

Survey Date: Jul 11, 2017

Survey SEA17-NPW24

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

Comments: Upstream runs along road ditch so 90 degree turn to culvert. Drainage from both sides of ditch and some uphill seepage. Outfall >4ft, steep downstream, large woody debris steps, at least 10ft drop over 30ft horizontal reach. First resting upstream above 2ft high rock step.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 79.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 90.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 1.9
Apron Length(ft):
Water Depth(ft): 0.08
Rustline Height(ft):0.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 4.74
Outfall Type: Free Fall on To Rip Rap
Constriction Ratio: 0.84
Culvert Gradient: 2.34%
Max Slope:
Max Slope Length:
 

Comments: Stream gradient is road ditch. Sharp approach angle from road ditch into pipe. Top of culvert length 75'.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:Silt/ClayGravel
Stream Slope(deg.):3.21
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 1.80
Upstream ordinary high water 50.0 2.50
Upstream ordinary high water 80.0 2.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 114.69
D/S Grade Ctrl (Thalweg) 0.00 89.89
D/S Water Surface Elev 0.00 90.04
D/S Grade Ctrl (Thalweg) 14.00 93.68
D/S Water Surface Elev 14.00 93.87
D/S Tailcrest or 1st Thalweg (rocks) 26.00 95.89
D/S Water Surface Elev 26.00 96.07
D/S Water Surface Elev 36.00 95.49
Max Pool Depth 36.00 93.47
D/S Grade Ctrl (Thalweg) (water first hits riprap) 41.00 96.80
D/S Water Surface Elev 41.00 96.94
Outlet Invert (on pipe) 43.00 100.15
D/S Water Surface Elev 43.00 100.23
Inlet Culvert Invert 122.00 102.00
U/S Water Surface Elev 122.00 102.16
U/S Grade Ctrl (Thalweg) 133.00 106.77
U/S Water Surface Elev 133.00 107.08
U/S Grade Ctrl (Thalweg) 163.00 107.55
U/S Water Surface Elev 163.00 107.76
U/S Water Surface Elev 190.00 107.91
U/S Grade Ctrl (Thalweg) 190.00 107.56

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): 2.5
Comments: 80ft upstream, no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.5
Comments: 10ft downstream, no fish

Fish Observations

No fish observations occurred during this survey.

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