Fish Passage Site 10103522

Coordinates (dec. deg.): 55.68748°, -132.87357°
Legal Description: C071S082E29
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: Jun 22, 2017

Survey SEA17-BSL05

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Clearcut upstream. Very little flow. Flow goes subsurface 30ft downstream for 20ft. Baffled. No place upstream deep enough for minnow trap. Steeper gradient upstream than downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 120.0
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: Gravel
InletOutlet
Width(ft):7.0 7.0
Height(ft):6.6 5.4
Apron Length(ft):
Water Depth(ft): 0.15
Rustline Height(ft):0.6
Substrate Depth(ft):0.4 1.6
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 6.67
Culvert Gradient: 6.60%
Max Slope:
Max Slope Length:
 

Comments: Top of culvert length 108.07'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:OrganicOrganic
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 1.25
Upstream ordinary high water 30.0 1.00
Upstream ordinary high water 80.0 0.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 116.41
D/S Grade Ctrl (Thalweg) 0.00 91.67
D/S Water Surface Elev 0.00 91.89
D/S Grade Ctrl (Thalweg) 36.00 90.68
D/S Water Surface Elev 36.00 90.79
D/S Water Surface Elev 40.00 90.89
Outlet Invert (On substrate, est. end mitre) 40.00 90.74
Outlet Culvert Top 46.00 100.00
Inlet Culvert Top 154.70 107.20
Inlet Culvert Invert (On substrate, est. end mitre) 160.70 101.49
U/S Water Surface Elev 160.70 101.51
U/S Grade Ctrl (Thalweg) 166.70 101.97
U/S Water Surface Elev 166.70 102.15
U/S Grade Ctrl (Thalweg) 187.70 105.72
U/S Water Surface Elev 187.70 105.88

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 (B) Trap Duration(h): 1.5
Comments: 50ft downstream

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 70 Max: 70 Mean: 70
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  

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