Fish Passage Site 10103541

Coordinates (dec. deg.): 55.60801°, -132.99983°
Legal Description: C072S081E21
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 23, 2017

Survey SEA17-BSL25

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Downstream has lots of large woody debris, deep pools, briaded around gravel bars. Upstream has slippery boulders. Safety concerns pervented surveying culvert tops.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 134.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.5
Corrugation Width(in.): 6.0
Condition Rating(1-5): 4
Approach Angle: 20.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):14.5 15.5
Height(ft):9.4 13.0
Apron Length(ft):
Water Depth(ft): 0.73
Rustline Height(ft):0.0
Substrate Depth(ft):5.1 2.5
Backwatered?: No
Baffles Present: No
Embedded?: Maybe
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.31
Culvert Gradient: 3.95%
Max Slope:
Max Slope Length:
 

Comments: Almost embedded. Observed one fish 60ft downstream about 3 inches long. Culvert gradient is water surface gradient through cuvlert, invert gradient on substrate is 4.65%. Safety concerns prevented accessing culvert tops. Top of culvert lengthis 120'.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):4.65
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 70.0 10.25
Upstream ordinary high water 100.0 11.00
Upstream ordinary high water 120.0 12.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 136.15
D/S Grade Ctrl (Thalweg) 0.00 94.00
D/S Water Surface Elev 0.00 94.18
D/S Grade Ctrl (Thalweg) 35.00 98.42
D/S Water Surface Elev 35.00 98.92
D/S Water Surface Elev 51.00 99.57
Max Pool Depth 51.00 98.31
D/S Water Surface Elev 70.00 100.39
D/S Grade Ctrl (Thalweg) 70.00 100.14
Outlet Invert (end of mitre, on substrate) 71.00 100.14
D/S Water Surface Elev 71.00 100.87
Inlet Culvert Invert (end of mitre, on substrate) 205.00 106.09
U/S Water Surface Elev 205.00 106.17
U/S Water Surface Elev 208.00 107.05
U/S Grade Ctrl (Thalweg) 208.00 105.78
U/S Grade Ctrl (Thalweg) 241.00 107.44
U/S Water Surface Elev 241.00 107.85
U/S Grade Ctrl (Thalweg) 265.00 109.14
U/S Water Surface Elev 265.00 109.42
U/S Water Surface Elev 327.00 112.58
U/S Grade Ctrl (Thalweg) 327.00 113.89

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: no fish, 50ft upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.5
Comments: 50ft downstream, no fish caught
 
Gear Type: Visual Observation, Ground (C)
Comments: Unidentified fish observed about 60 feet downstream, estimated length, 3 inches.

Fish Observations

No fish observations occurred during this survey.

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