Fish Passage Site 20303805

Coordinates (dec. deg.): 60.49538°, -151.01906°
Legal Description: S005N010W27
Region: South Central
Road Name: Forest Road

Datum: NAD83
Quad Name / ITM: Kenai B-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey KEN18-FORR01-2

Observers: Maggie Harings, Brandon Bornemann

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2018


Site Observations:

  1. None of this type

Comments: Culvert assessment and photos provided by Kenai Watershed Forum. Culvert replaced 10/1/18. Will be reaccessed in 2019 after cuvlert and stream have time to adjust.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 30.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 16.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Organic
InletOutlet
Width(ft):4.35 4.5
Height(ft):3.55 3.55
Apron Length(ft):
Water Depth(ft): 0.79
Rustline Height(ft):
Substrate Depth(ft):0.9 1.0
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 0.9
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.94
Culvert Gradient: 2.03%
Max Slope:
Max Slope Length:
 

Comments: Water surface gradient through culvert 0.66%. Downstream gradient 0.73%.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.89
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 2.30
Upstream ordinary high water 75.0 2.30
Upstream ordinary high water 95.0 2.40
Upstream ordinary high water 125.0 2.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 101.51
D/S Thalweg 0.00 96.46
D/S Water Surface Elev 0.00 97.15
D/S Water Surface Elev 14.00 97.26
D/S Thalweg 14.00 96.58
D/S Thalweg 41.00 96.49
D/S Water Surface Elev 41.00 97.52
D/S Thalweg 63.00 96.83
D/S Water Surface Elev 63.00 97.61
D/S Water Surface Elev 76.00 97.63
Outlet Invert (on substrate) 76.00 96.84
Outlet Culvert Top 76.00 100.00
Inlet Culvert Top 106.00 100.61
Inlet Culvert Invert (on substrate) 106.00 97.53
U/S Water Surface Elev 106.00 97.84
U/S Grade Ctrl (Thalweg) 123.00 98.20
U/S Water Surface Elev 123.00 98.34
U/S Thalweg (upstream pool) 148.00 98.11
U/S Water Surface Elev 148.00 98.79
U/S Water Surface Elev 183.00 98.96
U/S Thalweg 183.00 98.58
U/S Thalweg 215.00 98.70
U/S Water Surface Elev 215.00 99.18
U/S Water Surface Elev 247.00 99.44
U/S Thalweg 247.00 98.95

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): 1.5
Comments: Trap set about 70 feet upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.4166666
Comments: Trap set about 40 feet downstream.

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 6 Fork Lengths (mm) Min: 45 Max: 65 Mean: 55
Collected/Observed by Gear Type: Downstream Minnow Trap (4)  Upstream Minnow Trap (2)  
 
Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 96 Max: 96 Mean: 96
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  
 
Species: ninespine stickleback Life History: Unknown
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 47 Max: 60 Mean: 53
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  

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