Fish Passage Site 20103766

Coordinates (dec. deg.): 61.43455°, -142.93198°
Legal Description: C005S014E17
Region: South Central
Road Name: McCarthy Town Road

Datum: NAD83
Quad Name / ITM: Mc Carthy B-6
AWC Stream #: 212-20-10080-2300-3511-4035-5018
Stream Name: Swimming Hole

Elevation:

Site Comments: None

Survey Date: Jul 21, 2017

Survey CRWP17-Ken2

Observers: Kirsti Jurica, Hoots Witsoe

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Shallow fill; inadequate roadfill volume above culvert
  2. Mechanical damage or joints parting
  3. Structural Problem
  4. Culvert gradient red

Comments: Culvert assessment performed and submitted by the Copper River Watershed Project. Off channel habitat of the Kennicott River. Limited and intermittent flow. Old Large side channel and proximal to Kennicott Glacier Lake. Interconnected pools downstream. Numerous juvenile Coho and Dolly Varden char caught in upstream pool. Culvert is crushed and barely passing water.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 19.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.2
Height(ft):2.06 1.81
Apron Length(ft):
Water Depth(ft): 0.22
Rustline Height(ft):0.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.90%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Mechanical damage or joints parting
  4. Structural Problem

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Low

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.00
D/S Grade Ctrl (Thalweg) 0.00 98.23
D/S Water Surface Elev 0.00 98.55
Outlet Invert 1.00 98.65
D/S Water Surface Elev 1.00 98.87
Outlet Culvert Top (damaged) 1.00 100.46
Inlet Culvert Top (damaged) 20.00 101.09
Inlet Culvert Invert (on pipe) 20.00 99.03
U/S Water Surface Elev 20.00 99.24
U/S Water Surface Elev 30.00 99.26
U/S Thalweg 30.00 96.16

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
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
 
Gear Type: Minnow Trap (C) Trap Duration(h): 2.0
Comments: No fish caught
 
Gear Type: Visual Observation, Ground (D)
Comments: Coho Fry observed at outlet

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 10 Fish Measured: 5 Fork Lengths (mm) Min: 55 Max: 150 Mean: 113
Collected/Observed by Gear Type: Downstream Visual Observation, Ground (5)  Not Recorded Minnow Trap (3)  Not Recorded Minnow Trap (2)  
 
Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 130 Max: 130 Mean: 130
Collected/Observed by Gear Type: Not Recorded Minnow Trap (1)  

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