Fish Passage Site 20203724

Coordinates (dec. deg.): 60.11315°, -149.44383°
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: Site is located on a driveway off of 2nd Avenue. It is about 30 feet upstream from 117_2007 and about 60 feet downstream from 119_2007

Survey Date: Jul 21, 2017

Survey KEN17-118_2007

Observers: Jeff Sires, Luke Violette, Louis Mitchell

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_14. Culvert assessment submitted by Kenai Watershed Forum. Stream is ditched upstream and downstream from culvert. Multiple culverts above and below this site. Stream gradient and ordinary high water widths used for constriction were taken downstream below last culvert downstream (117_2007).

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 50.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 2.33
Height(ft):2.36 2.5
Apron Length(ft):
Water Depth(ft): 0.65
Rustline Height(ft):0.9
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: 2.34%
Max Slope:
Max Slope Length:
 

Comments: Top of culvert gradient 2.10%, water surface gradient though culvert 1.52%.
  Culvert Observations:
  1. Culvert gradient red
  2. Damage associated with ice problems

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):1.97
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 5.0 7.30
Downstream ordinary high water 10.0 3.75
Downstream ordinary high water 15.0 3.00
Upstream ordinary high water 20.0 1.75
Upstream ordinary high water 40.0 4.50
Upstream ordinary high water 60.0 3.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Driveway #7) 103.64
D/S Thalweg (TBM #2 used for survey 101.84 = TMB #1 - 100.) 0.00 99.20
D/S Water Surface Elev 0.00 99.41
D/S Grade Ctrl (Thalweg) 8.00 99.50
D/S Water Surface Elev 8.00 99.84
D/S Grade Ctrl (Thalweg) 14.00 100.26
D/S Water Surface Elev 14.00 100.42
D/S Thalweg 32.00 99.66
D/S Water Surface Elev 32.00 100.35
Outlet Culvert Top 33.00 102.29
Outlet Invert 33.00 99.81
D/S Water Surface Elev 33.00 100.46
Inlet Culvert Invert 83.50 100.99
U/S Water Surface Elev 83.50 101.23
Inlet Culvert Top 83.50 103.35
U/S Water Surface Elev 84.50 101.24
U/S Thalweg 84.50 101.06
U/S Thalweg 101.50 101.87
U/S Water Surface Elev 101.50 102.01
U/S Grade Ctrl (Thalweg) 127.50 102.70
U/S Water Surface Elev 127.50 102.85
U/S Water Surface Elev 143.50 102.98
U/S Thalweg 143.50 102.64

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): 0.75
Comments: Trap set about 130 feet upstream above next culvert
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.75
Comments: Trap set about 5 feet downstream.

Fish Observations

No fish observations occurred during this survey.

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