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 MSB11-BRY01

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Abraham Gioffre, Jim Latham

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2010


Site Observations:

  1. None of this type

Comments: Survey of a replacement culvert installed in 2010. Old survey information stated this culvert was on Lancaster Road which according to a nearby resident does not exist. The road has always been labeled as Bryant. The culvert connects Stephan Lake which is upstream and an unknown lake approximately 300' dwst.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 65.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Cobble
InletOutlet
Width(ft):6.0 6.1
Height(ft):4.2 4.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.17
Rustline Height(ft):
Substrate Depth(ft):1.8 2.0
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.8
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.11
Culvert Gradient: 3.00%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):2.1
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 64.0 5.60
Downstream ordinary high water 93.0 4.80
Downstream ordinary high water 118.0 5.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (water surface for gradient) 0.00 90.48
D/S Water Surface Elev (water surface for gradient) 75.00 92.06
D/S Thalweg (profile pt) 89.00 92.71
D/S Water Surface Elev 89.00 92.92
Outlet Invert (invert on substrate) 110.00 94.01
D/S Water Surface Elev (outlet water surface) 110.00 94.18
Outlet Culvert Top 110.00 98.10
Road Elev 140.00 100.85
Inlet Culvert Top 175.40 100.06
U/S Water Surface Elev (inlet water surface) 175.40 96.07
Inlet Culvert Invert (invert on substrate) 175.40 95.81
U/S Thalweg (profile pt) 187.40 95.91
U/S Water Surface Elev 187.40 96.33
U/S Grade Ctrl (Thalweg) (grade pt) 239.00 97.31
U/S Water Surface Elev 239.00 97.64

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov