Fish Passage Site 10103555

Coordinates (dec. deg.): 55.91383°, -132.99431°
Legal Description: C069S081E04
Region: Southeast
Road Name: Coffman Cove Road

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

Elevation:

Site Comments: None

Survey Date: Jun 05, 2017

Survey SEA17-CVR06

Observers: Mark Eisenman, Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: Bedrock control upstream and downstrream, large drops upstream and downstream, steep creek.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 117.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 1.5
Corrugation Width(in.): 4.4
Condition Rating(1-5): 3
Approach Angle: 2.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):10.5 12.0
Height(ft):7.9 7.2
Apron Length(ft):
Water Depth(ft): 0.35
Rustline Height(ft):0.0
Substrate Depth(ft):2.6 4.8
Backwatered?: No
Baffles Present: Yes
Embedded?: Yes
Embedded Depth(ft): 2.6
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.2
Culvert Gradient: 9.02%
Max Slope:
Max Slope Length:
 

Comments: Top of mitre length given. Baffles holding sediment. No visible rustline. Top of culvert length 95'. Culvert set to almost within 1% slope exactly.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:BedrockBedrock
Subdominant:CobbleCobble
Stream Slope(deg.):8
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 100.0 9.70
Downstream ordinary high water 175.0 10.50
Downstream ordinary high water 200.0 5.20
Upstream ordinary high water 75.0 4.79
Upstream ordinary high water 100.0 5.00
Upstream ordinary high water 150.0 5.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 119.96
D/S Grade Ctrl (Thalweg) (below bedrock/log cascade) 0.00 86.08
D/S Water Surface Elev 0.00 87.21
D/S Grade Ctrl (Thalweg) (top of cascade) 7.00 89.57
D/S Water Surface Elev 7.00 90.07
D/S Grade Ctrl (Thalweg) (poll/riffle break) 25.00 91.01
D/S Water Surface Elev 25.00 91.29
D/S Water Surface Elev 28.50 91.30
Max Pool Depth 28.50 89.84
Outlet Invert (estimated end of mitre) 36.00 92.40
D/S Water Surface Elev 36.00 92.75
Outlet Culvert Top 47.00 100.00
Inlet Culvert Top 142.00 108.57
Inlet Culvert Invert 153.00 101.44
U/S Water Surface Elev 153.00 102.01
U/S Grade Ctrl (Thalweg) (first bedrock step) 175.00 105.39
U/S Water Surface Elev 175.00 105.57
U/S Grade Ctrl (Thalweg) (top of glide) 240.00 110.48
U/S Water Surface Elev 240.00 110.77

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): 4.75
Comments: dolly captured, 30ft upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 4.75
Comments: dollys and cutthroat, 20ft doownstream

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 3 Fish Measured: 3 Fork Lengths (mm) Min: 55 Max: 78 Mean: 66
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (1)  
 
Species: juvenile cutthroat trout Life History:
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 52 Max: 96 Mean: 74
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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