Fish Passage Site 10103533

Coordinates (dec. deg.): 55.57451°, -133.06259°
Legal Description: C073S081E02
Region: Southeast
Road Name: Big Salt Lake Road

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

Elevation:

Site Comments: None

Survey Date: Jul 15, 2017

Survey SEA17-BSL16

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: Close to being embedded. Mostly shallow riffle up and downstream. Upstream has 4ft high LWD step, splits around gravel bar. Downstream braided around gravel bars. Stream may have cut in upstream of culvert, slowing passage of substrate.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural aluminum plate) Fish Passage Rating: Gray
 
Length(ft): 80.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 3.0
Corrugation Width(in.): 9.0
Condition Rating(1-5): 5
Approach Angle: 21.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):7.0 7.2
Height(ft):4.3 5.3
Apron Length(ft):
Water Depth(ft): 0.1
Rustline Height(ft):
Substrate Depth(ft):1.25 0.7
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.53
Culvert Gradient: 1.40%
Max Slope:
Max Slope Length:
 

Comments: Close to being embedded. Culvert maybe slowing passage or substrate but not barrier right now.
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):4.58
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 20.0 4.50
Downstream ordinary high water 40.0 3.50
Downstream ordinary high water 60.0 3.25
Upstream ordinary high water 30.0 5.00
Upstream ordinary high water 60.0 4.00
Upstream ordinary high water 80.0 4.75

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 107.65
D/S Grade Ctrl (Thalweg) 0.00 95.48
D/S Water Surface Elev 0.00 95.66
D/S Grade Ctrl (Thalweg) 21.00 96.76
D/S Water Surface Elev 21.00 97.12
D/S Tailcrest or 1st Thalweg 64.00 98.75
D/S Water Surface Elev 64.00 98.92
D/S Water Surface Elev 70.00 98.87
Max Pool Depth 70.00 98.55
Outlet Culvert Top 80.00 104.59
Outlet Invert (On substrate) 80.00 99.06
D/S Water Surface Elev 80.00 99.16
Inlet Culvert Invert 161.00 101.33
U/S Water Surface Elev 161.00 101.35
Inlet Culvert Top 161.00 105.72
U/S Grade Ctrl (Thalweg) 170.00 101.42
U/S Water Surface Elev 170.00 101.62
U/S Grade Ctrl (Thalweg) 185.00 101.82
U/S Water Surface Elev 185.00 101.93

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): 1.7
Comments: 80ft upstream, no fish caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.5
Comments: 50ft downstream, two dollys

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 85 Max: 95 Mean: 90
Collected/Observed by Gear Type: Minnow Trap (2)  

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