Fish Passage Site 10103565

Coordinates (dec. deg.): 55.50035°, -132.94049°
Legal Description: C073S082E34
Region: Southeast
Road Name: Hollis Klawock Road

Datum: NAD83
Quad Name / ITM: Craig C-3
AWC Stream #: 103-60-10470-2135
Stream Name: Unnamed

Elevation:

Site Comments: Site next to boat launch for Klawock Lake

Survey Date: Aug 01, 2017

Survey SEA17-HLK05

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height red
  3. Constriction ratio gray

Comments: Creek runs into lake about 150 feet downstream. Stream consists mostly of cascades and step pools, estimate that stream gradient is about 4-5%, maybe a little steeper upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated aluminum) Fish Passage Rating: Red
 
Length(ft): 70.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 4.0
Condition Rating(1-5): 3
Approach Angle: 5.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.0 4.9
Height(ft):5.0 5.1
Apron Length(ft):
Water Depth(ft): 0.18
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.31
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.66
Culvert Gradient: 3.31%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Constriction ratio gray
  3. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 7.60
Upstream ordinary high water 50.0 7.30
Upstream ordinary high water 75.0 7.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 99.96
D/S Grade Ctrl (Thalweg) 0.00 87.85
D/S Water Surface Elev 0.00 88.13
Outlet Pool Water Elev 7.00 88.41
Max Pool Depth 7.00 86.41
Outlet Culvert Top 15.00 94.81
Outlet Invert (on pipe) 15.00 89.54
D/S Water Surface Elev 15.00 89.72
Inlet Culvert Invert (on pipe) 85.60 91.88
U/S Water Surface Elev 85.60 92.23
Inlet Culvert Top 85.60 96.67
U/S Grade Ctrl (Thalweg) 90.60 93.14
U/S Water Surface Elev 90.60 93.48
U/S Grade Ctrl (Thalweg) 99.60 93.70
U/S Water Surface Elev 99.60 94.06

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): 0.8
Comments: Trap set about 10 feet downstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.8

Fish Observations

Species: juvenile/adult cutthroat trout Life History: Unknown
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 90 Max: 110 Mean: 100
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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