Fish Passage Site 20203728

Coordinates (dec. deg.): 60.11215°, -149.44386°
Legal Description: S001S001W03
Region: South Central
Road Name: Driveway

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #: 231-30-10070-2009
Stream Name: Scheffler Creek

Elevation:

Site Comments: Culvert is the last line of a series of driveway culverts that runs next to Second Avenue. There is one more culvert upstream of this site.

Survey Date: Aug 08, 2017

Survey KEN17-122_2007

Observers: Jeff Sires, Louis Mitchell, Mary Richardson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Damage associated with ice problems

Comments: KWFRES_17_18. Culvert assessment and photographs submitted by Kenai Watershed Forum. Upstream and downstream ditched. Used downstream stream measurements below lower culvert 112_2007 for OHW for Constriction Ratio. Site 121_2007 is about 70 feet downstream. There is another culvert upstream about 250 feet.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 30.34
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 1.9
Height(ft):2.5 2.5
Apron Length(ft):
Water Depth(ft): 0.13
Rustline Height(ft):0.8
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: 1.03
Culvert Gradient: 3.49%
Max Slope:
Max Slope Length:
 

Comments: Inlet and outlet damaged.
  Culvert Observations:
  1. Culvert gradient red
  2. Damage associated with ice problems

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:GravelCobble
Stream Slope(deg.):3.12
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 19.0 4.16
Downstream ordinary high water 35.0 3.50
Downstream ordinary high water 50.0 3.25
Upstream ordinary high water 20.0 4.50
Upstream ordinary high water 45.0 4.80
Upstream ordinary high water 70.0 3.90
Upstream ordinary high water 110.0 4.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 97.01
D/S Grade Ctrl (Thalweg) 0.00 90.70
D/S Water Surface Elev 0.00 90.82
D/S Thalweg 5.00 90.87
D/S Water Surface Elev 5.00 91.02
D/S Grade Ctrl (Thalweg) 33.00 92.01
D/S Water Surface Elev 33.00 92.13
D/S Grade Ctrl (Thalweg) 56.00 92.76
D/S Water Surface Elev 56.00 92.79
D/S Water Surface Elev 60.00 92.83
D/S Tailcrest or 1st Thalweg 60.00 92.37
Outlet Pool Water Elev 64.00 92.87
Max Pool Depth 64.00 91.89
Outlet Invert (on pipe) 67.00 92.77
D/S Thalweg (substrate directly below culvert outlet) 67.00 92.34
D/S Water Surface Elev 67.00 92.90
Outlet Culvert Top 67.00 95.15
U/S Water Surface Elev 97.34 94.08
Inlet Culvert Top 97.34 93.83
Inlet Culvert Invert (on pipe) 97.34 96.36
U/S Thalweg 99.34 94.06
U/S Water Surface Elev 99.34 94.25
U/S Thalweg 149.34 95.33
U/S Water Surface Elev 149.34 95.44
U/S Grade Ctrl (Thalweg) 194.34 96.47
U/S Water Surface Elev 194.34 96.71
U/S Thalweg 247.34 98.29
U/S Water Surface Elev 247.34 98.50

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): 1.0
Comments: Trap set about 2 feet downstream in outlet pool.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov