Fish Passage Site 10103564

Coordinates (dec. deg.): 55.48562°, -132.91242°
Legal Description: C074S082E02
Region: Southeast
Road Name: Hollils Klawock Highway

Datum: NAD83
Quad Name / ITM: Craig B-3
AWC Stream #: 103-60-10470-2161
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Aug 01, 2017

Survey SEA17-HLK04

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. Beaver Activity

Comments: Juvenile coho observed upstream and downstream of culvert. Beaver dam downstream of culvert. Water very tannic.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated aluminum) Fish Passage Rating: Red
 
Length(ft): 55.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 4.0
Condition Rating(1-5): 2
Approach Angle: 16.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):4.9 4.7
Height(ft):5.0 4.8
Apron Length(ft):
Water Depth(ft): 0.97
Rustline Height(ft):
Substrate Depth(ft):0.0 0.2
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.77
Culvert Gradient: 2.28%
Max Slope:
Max Slope Length:
 

Comments: Top of outlet damaged.
  Culvert Observations:
  1. Culvert gradient red
  2. Beaver Activity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 8.50
Upstream ordinary high water 70.0 7.50
Upstream ordinary high water 150.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 103.66
D/S Grade Ctrl (Thalweg) (near beaver dam) 0.00 94.81
D/S Water Surface Elev 0.00 96.00
D/S Tailcrest or 1st Thalweg 150.00 94.74
D/S Water Surface Elev 150.00 95.85
Outlet Pool Water Elev 171.00 95.80
Max Pool Depth 171.00 94.42
Outlet Invert (on pipe) 188.00 95.08
D/S Water Surface Elev 188.00 96.05
Outlet Culvert Top 188.00 99.98
Inlet Culvert Top 243.70 101.25
U/S Water Surface Elev 243.70 96.50
Inlet Culvert Invert (on substrate) 243.70 96.12
U/S Grade Ctrl (Thalweg) 247.70 96.14
U/S Water Surface Elev 247.70 96.37
U/S Water Surface Elev 252.70 96.49
U/S Grade Ctrl (Thalweg) (Pool 1st resting) 252.70 95.65
U/S Grade Ctrl (Thalweg) (Log step) 255.70 96.53
U/S Water Surface Elev 255.70 97.37

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): 2.0
Comments: No fish caught
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
 
Gear Type: Visual Observation, Ground (C)
Comments: Juvenile salmonids, most likely coho observed upstream and downstream of culvert.

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 7 Fish Measured: 1 Fork Lengths (mm) Min: 49 Max: 49 Mean: 49
Collected/Observed by Gear Type: At Site Visual Observation, Ground (6)  Downstream Minnow Trap (1)  

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