Fish Passage Site 10103563

Coordinates (dec. deg.): 55.48727°, -132.91330°
Legal Description: C074S082E02
Region: Southeast
Road Name: Hollils Klawock Road

Datum: NAD83
Quad Name / ITM: Craig B-3
AWC Stream #: 103-60-10470-2155
Stream Name: Blue Creek

Elevation:

Site Comments: None

Survey Date: Jul 31, 2017

Survey SEA17-HLK03

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient gray
  3. Inlet perch

Comments: Steeper riffles upstream, a few pools with large woody debris. 2' large woody debris step at about 200 feet upstream. No barriers observed between culvert and lake. Creek braides downstream of culvert over gravel bars. At mouth of creek runs through grass and skunk cabbage.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 80.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 4
Approach Angle: 3.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):7.5 7.6
Height(ft):8.0 7.4
Apron Length(ft):
Water Depth(ft): 0.95
Rustline Height(ft):1.0
Substrate Depth(ft):0.1 0.2
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.7
Culvert Gradient: 1.96%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 12.50
Upstream ordinary high water 100.0 9.60
Upstream ordinary high water 150.0 10.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 104.45
D/S Grade Ctrl (Thalweg) 0.00 92.27
D/S Water Surface Elev 0.00 92.92
D/S Water Surface Elev 18.00 93.02
D/S Tailcrest or 1st Thalweg 18.00 92.58
Max Pool Depth 34.00 92.35
Outlet Pool Water Elev 34.00 93.32
Outlet Invert 48.00 92.32
D/S Water Surface Elev 48.00 93.27
Outlet Culvert Top 48.00 100.00
Inlet Culvert Top 128.60 101.58
U/S Water Surface Elev 128.60 92.98
Inlet Culvert Invert 128.60 93.42
U/S Grade Ctrl (Thalweg) 138.60 94.06
U/S Water Surface Elev 138.60 94.58
U/S Grade Ctrl (Thalweg) 159.60 95.09
U/S Water Surface Elev 159.60 95.42
U/S Grade Ctrl (Thalweg) 198.60 96.03
U/S Water Surface Elev 198.60 96.43

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): 1.3
Comments: Trap set about 80 feet upstream.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.3
Comments: Trap set about 10 feet downstream.

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 3 Fish Measured: 3 Fork Lengths (mm) Min: 45 Max: 62 Mean: 51
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  Upstream Minnow Trap (2)  
 
Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 124 Max: 124 Mean: 124
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  

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