Fish Passage Site 20501438

Coordinates (dec. deg.): 61.57825°, -149.75263°
Legal Description: S017N003W11
Region: South Central
Road Name: Kenlar Road

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: SUSITNA RIVER WATERSHED

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey MSB04-ML067

Observers: Gary Greenberg, I S

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Hydraulic flows exceeded capacity
  2. Mechanical damage or joints parting

Comments: COHO FRY ON BOTH SIDES OF CULVERT

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Green
 
Length(ft): 94.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.): 0.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.0
Height(ft):3.0
Apron Length(ft):
Water Depth(ft):0.1 1.0
Rustline Height(ft):0.5
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.84
Culvert Gradient: 1.20%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Hydraulic flows exceeded capacity
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Green
 
Length(ft): 96.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.): 0.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.0
Height(ft):3.0
Apron Length(ft):
Water Depth(ft):0.8 0.9
Rustline Height(ft):1.0
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.61
Culvert Gradient: 0.31%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Hydraulic flows exceeded capacity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bed width 75.0 2.10
Upstream bed width 100.0 2.60
Upstream bed width 125.0 1.80
Upstream bed width 150.0 2.10
Upstream ordinary high water 75.0 2.30
Upstream ordinary high water 100.0 2.80
Upstream ordinary high water 125.0 1.90
Upstream ordinary high water 150.0 2.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
OHW Left Bank 90.61
OHW Left Bank 90.69
D/S Tailcrest or 1st Thalweg 0.00 12.6 89.69
Max Pool Depth 7.60 5.0 89.57
D/S Thalweg 7.60 5.0 89.57
Outlet Invert 1 12.60 0.0 89.65
Outlet Invert 2 12.60 0.0 89.82
Road Elev 60.10 108.73
Inlet Culvert Invert 2 107.60 0.0 90.12
Inlet Culvert Invert 1 107.60 0.0 90.78
U/S Thalweg 1 113.60 6.0 90.14
U/S Thalweg 2 113.60 6.0 89.70

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: Visual Observation, Ground (A)
Comments: Coho fry observed on both sides of culvert.

Fish Observations

No fish observations occurred during this survey.

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