Fish Passage Site 20203733

Coordinates (dec. deg.): 60.12032°, -149.44093°
Legal Description: S001S001W03
Region: South Central
Road Name: Seward Highway

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #: 231-30-10070-2016
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jul 13, 2017

Survey KEN17-49_2006

Observers: Jeff Sires, Luke Violette, Louis Mitchell

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Compound gradient in pipe
  2. Mechanical damage or joints parting
  3. Culvert is poorly aligned
  4. Constriction ratio gray
  5. Culvert sagging in middle
  6. Culvert gradient gray

Comments: KWFRES_17_02 Site assessment information and photos collected and submitted by the Kenai Watershed Forum. About 40 feet upstream is another culvert the is under the driveway for the NAPA store. This creek joins another creek just downstream of outlet. Creek is a confined ditch all the way upstream to it's source near the railroad depot. Stream widths taken upstream before upstream culvert. Imagery shows creek is heavily manipulated and ditched and width stays about the same.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 144.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 72.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: Sand
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 1.625
Apron Length(ft):
Water Depth(ft): 0.83
Rustline Height(ft):0.375
Substrate Depth(ft):0.0 0.4
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.67%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting
  3. Compound gradient in pipe
  4. Constriction ratio gray
  5. Culvert sagging in middle
  6. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:GravelGravel
Stream Slope(deg.):0.31
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 15.0 4.00
Downstream ordinary high water 39.0 9.33
Downstream ordinary high water 62.0 10.00
Upstream ordinary high water 8.0 3.33
Upstream ordinary high water 17.0 2.92
Upstream ordinary high water 27.0 3.25
Upstream ordinary high water 38.0 2.92

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 93.19
D/S Water Surface Elev 0.00 93.79
D/S Water Surface Elev 25.00 93.87
D/S Thalweg 25.00 93.26
D/S Water Surface Elev 55.00 94.02
D/S Thalweg 55.00 93.11
D/S Water Surface Elev 80.00 94.04
D/S Thalweg 80.00 93.48
D/S Water Surface Elev 100.00 94.04
Outlet Invert (on substrate) 100.00 93.21
Outlet Invert (on substrate) 100.00 93.21
Outlet Invert 100.00 93.21
Outlet Culvert Top 100.00 94.93
Inlet Culvert Top 244.00 95.90
U/S Water Surface Elev 244.00 94.18
Inlet Culvert Invert (on pipe) 244.00 93.92
Inlet Culvert Invert 244.00 93.92
U/S Thalweg 269.00 93.70
U/S Water Surface Elev 269.00 94.50
U/S Water Surface Elev 289.00 94.46
U/S Thalweg (Just below outlet of upstream culvert) 289.00 93.88
U/S Thalweg 289.00 93.88

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): 1.45
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.45

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 30 Max: 30 Mean: 30
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  

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