Fish Passage Site 10103535

Coordinates (dec. deg.): 55.58545°, -133.03996°
Legal Description: C072S081E31
Region: Southeast
Road Name: Big Salt Lake Road

Datum: NAD83
Quad Name / ITM: Craig C-4
AWC Stream #: 103-60-10390
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jul 17, 2017

Survey SEA17-BSL19

Observers: Elizabeth Flory

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height red

Comments: Upstream several bedrock step cascades, one 7-8ft high. Downstream outlet falls >1ft on to bedrock and boulders. Channel split at base of boulders. Doubtful if anadromous above downstream trap at 80ft downstream, but 3 dollys caught in pool at inlet.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 89.2
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 3.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.0 6.0
Height(ft):6.0 5.3
Apron Length(ft):
Water Depth(ft): 0.07
Rustline Height(ft):1.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.6
Outfall Type: Free Fall on To Rip Rap
Constriction Ratio: 1.57
Culvert Gradient: 7.98%
Max Slope:
Max Slope Length:
 

Comments: Length includes mitres. Culvert has water entering through holes in pipe at inlet. Top of culvert length 78.3'.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:BedrockBoulder
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 40.0 4.25
Upstream ordinary high water 60.0 4.00
Upstream ordinary high water 80.0 3.25

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 108.15
D/S Water Surface Elev 0.00 87.87
D/S Grade Ctrl (Thalweg) 0.00 87.74
D/S Water Surface Elev 8.00 87.77
D/S Tailcrest or 1st Thalweg 8.00 87.85
Max Pool Depth (Crack in bedrock) 14.00 88.29
D/S Water Surface Elev 14.00 92.04
Outlet Invert (on pipe) 19.00 93.57
U/S Water Surface Elev 19.00 93.64
Outlet Culvert Top 27.00 100.00
Inlet Culvert Top 105.30 106.30
U/S Water Surface Elev 114.30 101.30
Inlet Culvert Invert (on pipe) 114.30 101.18
U/S Water Surface Elev 118.30 101.26
U/S Thalweg (1st resting) 118.30 100.32
U/S Grade Ctrl (Thalweg) 129.30 104.00
U/S Water Surface Elev 129.30 104.12

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: Pool at inlet, 3 dollys
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: 80ft downstream

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 3 Fish Measured: 3 Fork Lengths (mm) Min: 92 Max: 108 Mean: 98
Collected/Observed by Gear Type: Upstream Minnow Trap (3)  

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