Fish Passage Site 10103531

Coordinates (dec. deg.): 55.61775°, -132.93788°
Legal Description: C072S081E23
Region: Southeast
Road Name: Big Salt Lake Road

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

Elevation:

Site Comments: None

Survey Date: Jul 10, 2017

Survey SEA17-BSL14

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Downstream has a 2ft vertical step formed by large woody debris. Brushy with alder and spruce. Upstream has several large 3ft high woody debris steps and very brushy. Dolly varden and rainbow trout captured upstream. Creek is cataloged below crossing as AWC Stream #103-60-10310-2006.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 74.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 5.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):6.8 7.2
Height(ft):5.75 4.25
Apron Length(ft):
Water Depth(ft): 0.17
Rustline Height(ft):1.2
Substrate Depth(ft):1.05 2.95
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.12
Culvert Gradient: 13.50%
Max Slope:
Max Slope Length:
 

Comments: Baffled. Top of culvert length 64'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):15.47
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 5.40
Upstream ordinary high water 50.0 6.75
Upstream ordinary high water 80.0 6.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 103.43
D/S Grade Ctrl (Thalweg) 0.00 82.60
D/S Water Surface Elev 0.00 82.93
D/S Grade Ctrl (Thalweg) 6.00 84.12
D/S Water Surface Elev 6.00 84.23
D/S Tailcrest or 1st Thalweg 42.00 86.70
D/S Water Surface Elev 42.00 86.87
Max Pool Depth 46.00 86.20
D/S Water Surface Elev 46.00 86.83
Outlet Invert (On substrate) 49.00 86.72
D/S Water Surface Elev 49.00 86.89
Outlet Culvert Top 54.00 91.36
Inlet Culvert Top 118.00 100.00
Inlet Culvert Invert (On substrate) 123.00 94.42
U/S Water Surface Elev 123.00 94.96
U/S Grade Ctrl (Thalweg) 131.00 95.68
U/S Water Surface Elev 131.00 95.76
U/S Grade Ctrl (Thalweg) 153.00 99.92
U/S Water Surface Elev 153.00 100.27
U/S Grade Ctrl (Thalweg) 184.00 104.17
U/S Water Surface Elev 184.00 104.29
U/S Grade Ctrl (Thalweg) 191.00 104.85
U/S Water Surface Elev 191.00 104.96

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): 1.75
Comments: 30ft upstream, 2 dolly varden, 1 rainbow captured
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.75
Comments: 30ft downstream, no fish caught, but found trap had no bait.

Fish Observations

Species: juvenile rainbow trout Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 100 Max: 100 Mean: 100
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  
 
Species: juvenile Dolly Varden Life History:
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 99 Max: 135 Mean: 117
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  

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