Fish Passage Site 20300883

Coordinates (dec. deg.): 60.18492°, -151.30540°
Legal Description: S001N012W11
Region: South Central
Road Name: Falls Creek Road

Datum: NAD83
Quad Name / ITM: Kenai A-4
AWC Stream #: 244-20-10090
Stream Name:

Elevation:

Site Comments: Location: Falls Creek Rd. Stream lies in an open marsh that it drains. Visible flow on surface, but very slow. Stream bottom very vegetated.

Survey Date: Jun 28, 2004

Survey KPC04-1A008

Observers: Mary King, Pam Russell

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Location: Falls Creek Rd. Stream: Stream lies in an open marsh that it drains. Ponding occurs upstream of inlet with channel forming ~25' upstream. Visible flow on surface, but very slow (discharge measurement @ 100' upstream). Stream bottom very vegetated. Culvert: Culvert forms a crown where an ATV trail crosses the marsh.

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 20.82
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.0
Height(ft):1.92
Apron Length(ft):
Water Depth(ft): 0.76
Rustline Height(ft):1.17
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.42
Outfall Type:
Constriction Ratio: 1.25
Culvert Gradient: -2.16%
Max Slope:
Max Slope Length:
 

Comments: No distinct tailcrest...gradual elevation increase in streambed for a distance downstream. 2" hole in the outlet, ~20" from the edge. Pipe condition=4. Embedded-Yes.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bank full 75.0 2.75
Upstream bank full 100.0 2.67
Upstream bank full 125.0 3.03
Upstream bank full 150.0 3.00
Upstream bed width 75.0 1.03
Upstream bed width 100.0 2.08
Upstream bed width 125.0 2.42
Upstream bed width 150.0 1.17
Upstream ordinary high water 75.0 2.17
Upstream ordinary high water 100.0 2.00
Upstream ordinary high water 125.0 2.83
Upstream ordinary high water 150.0 2.58

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 97.62
U/S Thalweg 1 97.71
D/S Tailcrest or 1st Thalweg 98.10
OHW Left Bank 99.37
OHW Left Bank 99.71
Outlet Culvert Top (Painted orange "X" on seam closest to the end of the outlet on top of the pipe.) 1 100.00
Max Pool Depth 0.00 5.0 97.94
Outlet Invert (Taken from bottom of arch.) 1 5.00 0.0 99.03
Road Elev (Road surface.) 15.00 99.48
Inlet Culvert Invert (Taken from bottom of arch.) 1 25.00 0.0 98.58

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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