Fish Passage Site 10103587

Coordinates (dec. deg.): 55.74779°, -132.97504°
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 Milepost 23

Survey Date: Jun 29, 2017

Survey SEA17-NPW21

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: First 40ft upstream is small seep through horsetail then nice large woody pools. Big 4ft high log step 50ft from inlet. Downstream mostly shallow riffle with some 1ft high log steps. Only one deeper pool (1ft deep) in 150ft reach.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 81.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 23.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: Cobble
InletOutlet
Width(ft):6.9 6.8
Height(ft):6.1 6.5
Apron Length(ft):
Water Depth(ft): 0.34
Rustline Height(ft):0.75
Substrate Depth(ft):0.8 0.3
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.8
Culvert Gradient: 5.47%
Max Slope:
Max Slope Length:
 

Comments: Top of culvert length 59 ft. Did not get top of pipe inlet reading as too steep to be safe. Pipe gradient is from invert water surfaces. Pool below outlet is 1.31ft deep. Outlet depth given is on invert.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:OrganicCobble
Stream Slope(deg.):5.27
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 55.0 2.25
Downstream ordinary high water 100.0 2.80
Downstream ordinary high water 110.0 3.25
Upstream ordinary high water 100.0 4.50
Upstream ordinary high water 120.0 4.00
Upstream ordinary high water 150.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 115.52
D/S Grade Ctrl (Thalweg) 0.00 93.89
D/S Water Surface Elev 0.00 94.01
D/S Grade Ctrl (Thalweg) 95.00 98.11
D/S Water Surface Elev 95.00 98.15
Max Pool Depth 102.00 98.08
Outlet Pool Water Elev 102.00 99.39
Outlet Invert (on substrate) 103.00 99.03
D/S Water Surface Elev 103.00 99.37
D/S Grade Ctrl (Thalweg) (1st baffle at outlet) 106.00 100.00
D/S Water Surface Elev 106.00 100.02
Outlet Culvert Top 114.00 105.50
Inlet Culvert Invert (on substrate) 184.00 102.54
U/S Water Surface Elev 184.00 103.80
U/S Grade Ctrl (Thalweg) 190.00 104.51
U/S Water Surface Elev 190.00 104.64
U/S Thalweg (Upstream pool max depth) 218.00 105.39
U/S Water Surface Elev 218.00 106.01

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): 1.25
Comments: 30ft upstream, no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.25
Comments: 80ft downstream, 1 dolly

Fish Observations

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 78 Max: 78 Mean: 78
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  

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