Fish Passage Site 10103570

Coordinates (dec. deg.): 55.82495°, -133.04393°
Legal Description: C070S081E06
Region: Southeast
Road Name: North Prince of Wales Road

Datum: NAD83
Quad Name / ITM: Craig D-4
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Near MP 29.

Survey Date: Jun 12, 2017

Survey SEA17-NPW04

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Dolly varden captured downstream. Large woody debris jam upstream forms big step that could be barrier. Upstream gradient looks similar to culvert but not measured due to brushyness.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 75.4
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 32.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):8.2 8.2
Height(ft):5.0 4.4
Apron Length(ft):
Water Depth(ft): 0.25
Rustline Height(ft):0.9
Substrate Depth(ft):3.2 3.8
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 3.2
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.15
Culvert Gradient: 2.14%
Max Slope:
Max Slope Length:
 

Comments: Outlet top of pipe damaged, inlet top of pipe dented. Top of culvert length 59.4'. No low water channel in culvert, may be a water depth barrier at times.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelBoulder
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 25.0 2.40
Upstream ordinary high water 50.0 6.00
Upstream ordinary high water 150.0 3.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 103.46
D/S Grade Ctrl (Thalweg) 0.00 90.70
D/S Water Surface Elev 0.00 90.87
D/S Tailcrest or 1st Thalweg 19.00 91.72
D/S Water Surface Elev 19.00 91.89
Outlet Invert (estimated end of mitre on substrate) 22.00 92.20
D/S Water Surface Elev 22.00 92.45
D/S Water Surface Elev 25.00 92.45
Max Pool Depth 25.00 91.77
D/S Grade Ctrl (Thalweg) (step between pipe and end of mitre) 29.00 92.83
D/S Water Surface Elev 29.00 93.09
Outlet Culvert Top 30.00 98.72
Inlet Culvert Top 89.40 99.99
Inlet Culvert Invert (end of mitre on substrate) 97.40 94.73
U/S Water Surface Elev 97.40 94.88
U/S Headwater 108.40 95.19
U/S Water Surface Elev 108.40 95.24
U/S Grade Ctrl (Thalweg) (LWD Step) 130.40 96.44
U/S Water Surface Elev 130.40 96.72

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: 2 dollys

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 67 Max: 72 Mean: 69
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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