Fish Passage Site 20501192

Coordinates (dec. deg.): 61.47303°, -149.95930°
Legal Description: S016N004W15
Region: South Central
Road Name: Bryant Road

Datum: NAD83
Quad Name / ITM: Anchorage B-8
AWC Stream #:
Stream Name: Connects two Lakes

Elevation:

Site Comments: Site next to MSCS1RS016 also on Bryant Road. Old survey information stated this culvert was on Lancaster Road which according to a nearby resident does not exist (2011). The road has always been labeled as Bryant. The culvert connects Stephan Lake which is upstream and an unknown lake approximately 300' dwst.

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 MSB09-LAN01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Mechanical damage or joints parting
  4. Shallow fill; inadequate roadfill volume above culvert

Comments: Site next to BRY01; large dent in top near outlet; lots of seepage under Bryant road from lake; pipe stained, no rust.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 19.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft): 0.0
Rustline Height(ft):0.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.37
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 2.16%
Max Slope:
Max Slope Length:
 

Comments: Large dent in top near outlet.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Mechanical damage or joints parting
  4. Shallow fill; inadequate roadfill volume above culvert

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:GravelSand
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Tailcrest or 1st Thalweg (chan is dry @ TWC) 1 0.00 2.0 97.27
Outlet Invert 1 2.00 0.0 97.61
D/S Thalweg 1 2.00 0.0 97.13
Outlet Pool Water Elev 1 2.00 97.24
Road Elev 1 11.50 100.17
U/S Thalweg (stream bed at u/s end of pipe) 1 20.90 0.0 97.88
U/S Headwater (lake) 1 20.90 97.96
Inlet Culvert Invert 1 20.90 0.0 98.04

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): 1.0
Comments: no fish caught; 50ft u/s

Fish Observations

No fish observations occurred during this survey.

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