Fish Passage Site 10103595

Coordinates (dec. deg.): 55.72816°, -132.95438°
Legal Description: C071S081E11
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 21.

Survey Date: Jul 12, 2017

Survey SEA17-NPW29

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
  3. Constriction ratio gray

Comments: Downstream steep, about 20% grade after plunge pool. Big drop from outfall to plunge pool. Plunge pool 1.75ft deep. Banking/roadfill giving way around outlet, dangerous. Upstream has steep riffle under old logs and some bedrock steps. Bedrock control.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 89.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 10.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 2.8
Apron Length(ft):
Water Depth(ft): 0.16
Rustline Height(ft):0.9
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 7.52
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.7
Culvert Gradient: 3.06%
Max Slope:
Max Slope Length:
 

Comments: Culvert length is to top of mitre measured across road. Top of culvert length 80'.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleBoulder
Subdominant:BoulderCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 70.0 5.00
Upstream ordinary high water 80.0 4.00
Upstream ordinary high water 100.0 3.75

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 101.30
D/S Grade Ctrl (Thalweg) 0.00 83.37
D/S Water Surface Elev 0.00 83.69
D/S Tailcrest or 1st Thalweg 4.00 83.96
D/S Water Surface Elev 4.00 84.15
D/S Water Surface Elev 5.00 83.83
Max Pool Depth 5.00 82.09
Outlet Invert (on pipe) 18.00 91.19
D/S Water Surface Elev 18.00 91.35
Outlet Culvert Top 22.00 94.53
Inlet Culvert Top 102.00 96.85
Inlet Culvert Invert (on pipe) 106.00 93.92
U/S Water Surface Elev 106.00 94.12
U/S Water Surface Elev 112.00 94.30
U/S Grade Ctrl (Thalweg) (pool) 112.00 93.13

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: 10ft upstream, no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Comments: 20ft downstream, no fish

Fish Observations

No fish observations occurred during this survey.

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