Fish Passage Site 10103581

Coordinates (dec. deg.): 55.77406°, -133.00044°
Legal Description: C070S081E28
Region: Southeast
Road Name: North Prince of Wales Road

Datum: NAD83
Quad Name / ITM: Craig D-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jun 19, 2017

Survey SEA17-NPW15

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: Large woody debris 50ft upstream where stream splits into three. Outlet splits into two. Left arm downstream has subsurface flow for 50ft. 3 rainbow captured downstream. Baffles. Lots of large woody debris downstream, less upstream.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 97.6
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.0
Condition Rating(1-5): 3
Approach Angle: 4.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):7.7 7.0
Height(ft):5.9 5.67
Apron Length(ft):
Water Depth(ft): 0.3
Rustline Height(ft):1.52
Substrate Depth(ft): 0.23
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.18
Culvert Gradient: 6.45%
Max Slope:
Max Slope Length:
 

Comments: Pipe gradient greater than upstream gradient. Substrate only on one side of culvert at inlet. Top of culvert length 83.6'.
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):4.76
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 40.0 3.20
Upstream ordinary high water 75.0 4.50
Upstream ordinary high water 120.0 2.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 113.00
D/S Grade Ctrl (Thalweg) 0.00 94.19
D/S Water Surface Elev 0.00 94.35
D/S Tailcrest or 1st Thalweg 22.00 94.61
D/S Water Surface Elev 22.00 94.72
D/S Water Surface Elev 27.00 94.91
Max Pool Depth 27.00 94.56
Outlet Invert (estimated end of mitre 7ft) 30.00 94.33
D/S Water Surface Elev 30.00 94.63
Outlet Culvert Top 37.00 100.02
Inlet Culvert Top 120.60 105.41
U/S Water Surface Elev 127.60 100.41
Inlet Culvert Invert (end of mitre 7ft) 127.60 99.54
U/S Grade Ctrl (Thalweg) (boulders) 134.60 101.38
U/S Water Surface Elev 134.60 101.60
U/S Grade Ctrl (Thalweg) 177.60 103.19
U/S Water Surface Elev 177.60 103.32
U/S Grade Ctrl (Thalweg) 228.60 106.02
U/S Water Surface Elev 228.60 106.08

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: 3 rainbow 10ft downstream, photos 861-863, measurements missing

Fish Observations

Species: juvenile rainbow trout Life History:
Total Fish Observed: 3 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (3)  
Comments: Fish lengths not recorded.

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