Fish Passage Site 10103589

Coordinates (dec. deg.): 55.74574°, -132.97305°
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 23

Survey Date: Jun 29, 2017

Survey SEA17-NPW23

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: Upstream has small step pools, goes under old logging slash and climbs hill, lots of gravel. Downstream has 1ft wide channel through horsetail then 1ft step down to pool, shallow riffle step pools beyond. Simlar gradient upstream and downstream. Less brushy downstream for gradient survey. One fish observed near downstream trap, none caught.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 61.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 8.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Organic
InletOutlet
Width(ft):7.0 7.0
Height(ft):4.4 3.8
Apron Length(ft):
Water Depth(ft): 0.17
Rustline Height(ft):0.3
Substrate Depth(ft):2.4 3.2
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 2.4
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.21
Culvert Gradient: 2.56%
Max Slope:
Max Slope Length:
 

Comments: Top of outlet pipe broken. Top of pipe used for gradient. Top of culvert length 53'. Water surface gradient through culvert 1.67%.
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):8.86
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 40.0 4.00
Downstream ordinary high water 50.0 4.00
Downstream ordinary high water 80.0 3.00
Upstream ordinary high water 50.0 3.00
Upstream ordinary high water 60.0 3.50
Upstream ordinary high water 80.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 108.01
D/S Grade Ctrl (Thalweg) (gravel step with large woody debris) 0.00 91.33
D/S Water Surface Elev 0.00 91.69
D/S Grade Ctrl (Thalweg) (gravel step with large woody debris) 53.00 97.97
D/S Water Surface Elev 53.00 98.13
D/S Tailcrest or 1st Thalweg (gravel) 86.00 99.26
D/S Water Surface Elev 86.00 99.31
D/S Water Surface Elev 101.00 99.25
Max Pool Depth 101.00 97.25
D/S Grade Ctrl (Thalweg) (step up to horsetail seep) 110.00 100.01
D/S Water Surface Elev 110.00 100.09
D/S Water Surface Elev 112.00 100.53
Outlet Invert (On substrate) 112.00 100.70
Outlet Culvert Top 114.00 104.75
Inlet Culvert Top 167.00 106.11
Inlet Culvert Invert (On substrate) 173.00 101.22
U/S Water Surface Elev 173.00 101.55
U/S Water Surface Elev 178.00 101.71
U/S Grade Ctrl (Thalweg) (logs) 178.00 101.53
U/S Grade Ctrl (Thalweg) (gravel) 200.00 102.64
U/S Water Surface Elev 200.00 102.76

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: 30ft upstream, no fish
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.5
Comments: 1 fish observed near trap 30ft downstream, not captured
 
Gear Type: Visual Observation, Ground (C)
Comments: One unidentified fish observed downstream near minnow trap

Fish Observations

No fish observations occurred during this survey.

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