Fish Passage Site 20303752

Coordinates (dec. deg.): 60.54728°, -150.75244°
Legal Description: S005N008W06
Region: South Central
Road Name: Moose River Drive

Datum: NAD83
Quad Name / ITM: Kenai C-3
AWC Stream #: 244-30-10010-2063-3003
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jun 13, 2017

Survey KEN17-MRD01

Observers: Elise Idle, Maggie Schaffer

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: Assessment information collected and submitted by USFWS. Large waterfall 40 feet upstream. Secondary overflow culvert 50 feet from newer one. Culvert looks like it was once embedded but most of the substrate inside culvert has scoured away.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 49.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 15.0
Sedimentation At Inlet: No
Inlet Substrate: Silt/Clay
Outlet Substrate: Cobble
InletOutlet
Width(ft):5.5 5.5
Height(ft):3.6 3.8
Apron Length(ft):
Water Depth(ft): 0.49
Rustline Height(ft):0.75
Substrate Depth(ft):0.6
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.03
Culvert Gradient: 0.94%
Max Slope:
Max Slope Length:
 

Comments: Primary culvert for the stream, replaced older culvert.
  Culvert Observations:
  1. Culvert gradient gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 35.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Unknown
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.5 1.5
Height(ft):1.5 1.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):0.9
Substrate Depth(ft):0.0
Backwatered?: Unknown
Baffles Present: No
Embedded?: No
Outfall Height: 1.5
Outfall Type: Overflow Pipe
Constriction Ratio:
Culvert Gradient: 2.25%
Max Slope:
Max Slope Length:
 

Comments: Overflow culvert, replaced by primary culvert.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/ClayCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 6.0 2.80
Upstream ordinary high water 18.0 2.50
Upstream ordinary high water 27.0 2.80
Upstream ordinary high water 38.0 2.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 101.11
D/S Thalweg 0.00 95.67
D/S Water Surface Elev 0.00 95.85
Outlet Invert 2 0.00 97.25
Outlet Culvert Top 2 0.00 98.74
D/S Thalweg 16.00 95.95
D/S Water Surface Elev 16.00 95.26
Outlet Culvert Top 1 23.00 100.00
Outlet Invert 1 23.00 96.11
D/S Water Surface Elev 1 23.00 96.60
Inlet Culvert Top (May not be tied to C1 elevations) 2 35.40 99.54
Inlet Culvert Invert (C2 uses separate benchmark for elevations) 2 35.40 98.07
Inlet Culvert Invert 2 35.40 98.07
Inlet Culvert Invert 1 72.70 96.79
U/S Water Surface Elev 1 72.70 96.98
Inlet Culvert Top 1 72.70 100.47
U/S Water Surface Elev 78.70 97.11
U/S Grade Ctrl (Thalweg) (Pool at inlet) 78.70 96.20
U/S Water Surface Elev 81.70 97.13
U/S Grade Ctrl (Thalweg) 81.70 96.76
U/S Water Surface Elev 98.70 97.69
U/S Thalweg 98.70 97.19

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): 1.25
Comments: Trap set about 35 feet upstream.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: Trap set about 60 feet downstream.

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 9 Fish Measured: 9 Fork Lengths (mm) Min: 67 Max: 98 Mean: 78
Collected/Observed by Gear Type: Downstream Minnow Trap (9)  

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