Fish Passage Site 20203741

Coordinates (dec. deg.): 60.15122°, -149.40675°
Legal Description: S001N001W26
Region: South Central
Road Name: Salmon Creek Road

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #: 231-30-10080-2010-3022
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Aug 11, 2017

Survey KEN17-87_2007

Observers: Louis Mitchell, Luke Violette, Mary Richardson

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: Maybe

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient gray

Comments: KWFRES_17_25. Culvert assessment performed and submitted by the Kenai Watershed Forum. Water surface elevations a inconsistent. Site maybe backwatered and embedded, but notes not clear. Site does appear to be constricted. Water too shallow upstream for trapping.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 46.0
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 25.0
Sedimentation At Inlet: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):2.75 3.0
Height(ft):2.25 1.2
Apron Length(ft):5.0 5.0
Water Depth(ft): 0.4
Rustline Height(ft):1.33
Substrate Depth(ft):1.0 1.2
Backwatered?: Maybe
Baffles Present: No
Embedded?: Maybe
Embedded Depth(ft): 1.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.57
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Inlet and Outlet aprons estimated to be about 5 feet.
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:OrganicOrganic
Stream Slope(deg.):0.2
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 10.0 1.30
Downstream ordinary high water 30.0 7.33
Downstream ordinary high water 50.0 8.50
Upstream ordinary high water 20.0 5.50
Upstream ordinary high water 40.0 5.00
Upstream ordinary high water 60.0 5.00
Upstream ordinary high water 80.0 5.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 99.79
D/S Thalweg 0.00 92.71
D/S Water Surface Elev 0.00 94.17
D/S Water Surface Elev 19.00 94.21
D/S Thalweg 19.00 93.80
D/S Thalweg (outlet of small stream) 45.00 92.85
D/S Water Surface Elev 45.00 94.29
D/S Thalweg 60.00 93.11
D/S Water Surface Elev 60.00 93.30
D/S Grade Ctrl (Thalweg) 88.00 94.17
D/S Water Surface Elev 88.00 94.43
D/S Water Surface Elev 92.00 94.51
D/S Thalweg 92.00 94.29
D/S Grade Ctrl (Thalweg) (outlet apron) 98.00 94.61
D/S Water Surface Elev 98.00 94.76
Outlet Invert 100.00 94.43
D/S Water Surface Elev 100.00 94.83
Outlet Culvert Top 100.00 95.60
Inlet Culvert Top 146.00 96.67
U/S Water Surface Elev 146.00 94.80
Inlet Culvert Invert 146.00 94.35
U/S Thalweg (End of inlet Apron) 150.00 94.09
U/S Water Surface Elev 150.00 94.78
U/S Water Surface Elev 161.00 94.80
U/S Thalweg 161.00 94.57
U/S Grade Ctrl (Thalweg) (Railroad Tie blocking creek just upstream of this grade point) 196.00 94.09
U/S Water Surface Elev 196.00 97.87
U/S Water Surface Elev 216.00 94.92
U/S Thalweg 216.00 94.63
U/S Thalweg 246.00 94.70
U/S Water Surface Elev 246.00 94.97

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): 0.9
Comments: Trap set about 50 feet downstream.

Fish Observations

No fish observations occurred during this survey.

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