Fish Passage Site 20203739

Coordinates (dec. deg.): 60.15534°, -149.43472°
Legal Description: S001N001W22
Region: South Central
Road Name: Driveway

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Driveway off of Clear Creek Avenue.

Survey Date: Aug 09, 2017

Survey KEN17-85_2007

Observers: Louis Mitchell, Luke Violette, Mary Richardson

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient red

Comments: KWFRES_17_20. Culvert assessment submitted by Kenai Watershed Forum.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 30.75
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: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):2.3 2.5
Height(ft):1.75 1.33
Apron Length(ft):
Water Depth(ft): 0.63
Rustline Height(ft):1.0
Substrate Depth(ft):0.5 0.2
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.72
Culvert Gradient: 1.30%
Max Slope:
Max Slope Length:
 

Comments: Water surface gradient flat through culvert and upstream and downstream from culvert. Substrate gradient through culvert .84%. Inlet and outlet show damage.
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:SandSand
Stream Slope(deg.):0.49
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 20.0 2.50
Downstream ordinary high water 45.0 3.50
Downstream ordinary high water 60.0 2.50
Upstream ordinary high water 20.0 3.50
Upstream ordinary high water 40.0 2.50
Upstream ordinary high water 60.0 3.75
Upstream ordinary high water 80.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 97.27
D/S Water Surface Elev 0.00 93.74
D/S Thalweg 0.00 93.50
D/S Grade Ctrl (Thalweg) 16.00 93.69
D/S Water Surface Elev 16.00 94.05
D/S Thalweg 40.00 94.11
D/S Water Surface Elev 40.00 94.28
D/S Thalweg 56.00 94.21
D/S Water Surface Elev 56.00 94.44
Max Pool Depth 98.00 94.39
D/S Water Surface Elev 98.00 94.97
D/S Water Surface Elev 100.00 94.98
Outlet Invert 100.00 94.35
Outlet Culvert Top 100.00 95.87
Inlet Culvert Top 130.75 96.27
U/S Water Surface Elev 130.75 94.97
Inlet Culvert Invert 130.75 94.61
U/S Thalweg 136.75 94.14
U/S Water Surface Elev 136.75 94.96
U/S Grade Ctrl (Thalweg) 154.75 94.97
U/S Water Surface Elev 154.75 95.12
U/S Water Surface Elev 209.75 95.32
U/S Thalweg 209.75 94.81

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 inside of culvert outlet, only deep enough spot downstream.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.75

Fish Observations

No fish observations occurred during this survey.

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