Fish Passage Site 20501436

Coordinates (dec. deg.): 61.56963°, -149.84109°
Legal Description: S017N003W16
Region: South Central
Road Name: Beaver Lake Road

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #: 247-50-10330-2050-3019-4011-5011
Stream Name: Lynda Lake Portage

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-ML076

Observers: Gary Greenberg, I S

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height red

Comments: COHO FRY OBSERVED ABOVE AND BELOW CULVERT. Site resurvyed in 2010. This survey should only be used for historical purposes.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft): 60.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
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):2.8 0.3
Rustline Height(ft):3.0
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.43
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
OHW Left Bank 97.11
OHW Left Bank 97.12
D/S Tailcrest or 1st Thalweg 0.00 8.2 96.79
Max Pool Depth 4.20 4.0 95.90
D/S Thalweg 4.20 4.0 95.90
Outlet Invert 1 8.20 0.0 97.24
Road Elev 38.20 105.55
Inlet Culvert Invert 1 68.20 0.0 97.30
U/S Thalweg 1 74.20 6.0 96.17

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 upstream and downstream from culvert.

Fish Observations

No fish observations occurred during this survey.

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