Fish Passage Site 20203719

Coordinates (dec. deg.): 60.16748°, -149.39059°
Legal Description: S001N001W23
Region: South Central
Road Name: Timber Lane Drive

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #: 231-30-10080-2010-3046
Stream Name: Unnamed

Elevation:

Site Comments: Driveway culvert upstream.

Survey Date: Jul 14, 2017

Survey KEN17-101_2007

Observers: Jeff Sires, Louis Mitchell, Luke Violette

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting
  3. Culvert sagging in middle
  4. Road bank erosion

Comments: KWFRES_17_05. Culvert assessment and photographs submitted by the Kenai Watershed Forum. Fish caught in upstream trap, no photos for positive ID. Creek is in Anadromous Waters Cataloge for Coho rearing.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 44.66
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 90.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):6.0 5.9
Height(ft):3.0 2.58
Apron Length(ft):
Water Depth(ft): 0.23
Rustline Height(ft):0.583
Substrate Depth(ft):1.58 2.58
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.58
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.3
Culvert Gradient: 0.85%
Max Slope:
Max Slope Length:
 

Comments: Downstream stream gradient 1.04%.
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting
  3. Culvert sagging in middle
  4. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Silt/ClaySand
Stream Slope(deg.):1.3
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 22.0 4.66
Downstream ordinary high water 76.0 4.83
Downstream ordinary high water 91.0 4.33
Upstream ordinary high water 39.0 5.50
Upstream ordinary high water 69.0 3.50
Upstream ordinary high water 95.0 4.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.50
D/S Thalweg 0.00 94.73
D/S Water Surface Elev 0.00 95.05
D/S Water Surface Elev 9.00 95.04
D/S Thalweg 9.00 94.51
D/S Grade Ctrl (Thalweg) 31.00 95.05
D/S Water Surface Elev 31.00 95.19
D/S Water Surface Elev 45.00 95.32
D/S Grade Ctrl (Thalweg) 45.00 94.71
D/S Grade Ctrl (Thalweg) 52.00 95.29
D/S Water Surface Elev 52.00 95.49
D/S Water Surface Elev 75.00 95.83
D/S Grade Ctrl (Thalweg) 75.00 95.43
D/S Water Surface Elev 95.00 96.00
D/S Thalweg 95.00 95.63
Outlet Invert 100.00 95.75
D/S Water Surface Elev 100.00 95.98
Outlet Culvert Top 100.00 98.52
Inlet Culvert Top 144.66 98.90
U/S Water Surface Elev 144.66 96.38
Inlet Culvert Invert (on substrate) 144.66 95.91
U/S Thalweg 148.66 95.41
U/S Water Surface Elev 148.66 96.35
U/S Water Surface Elev 170.66 96.45
U/S Grade Ctrl (Thalweg) 170.66 96.32
U/S Grade Ctrl (Thalweg) 190.66 96.48
U/S Water Surface Elev 190.66 96.64
U/S Grade Ctrl (Thalweg) 212.66 97.00
U/S Water Surface Elev 212.66 97.09
U/S Grade Ctrl (Thalweg) 219.66 97.12
U/S Water Surface Elev 219.66 97.28
U/S Water Surface Elev 240.66 97.38
U/S Thalweg 240.66 97.16

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): 1.25
Comments: Trap set about 55 feet upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.25
Comments: Trap set about 50 feet downstream

Fish Observations

No fish observations occurred during this survey.

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