Fish Passage Site 20501172

Coordinates (dec. deg.): 61.47316°, -149.95946°
Legal Description: S016N004W15
Region: South Central
Road Name: Bryant Road

Datum: NAD83
Quad Name / ITM: Anchorage B-8
AWC Stream #:
Stream Name: Goose Creek

Elevation:

Site Comments: Small culvert located on Bryant Road with a private drive located immediately upstream.

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-BRY01

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Outfall height red
  3. Culvert gradient red
  4. Shallow fill; inadequate roadfill volume above culvert
  5. Culvert is poorly aligned

Comments: Trickle of water in pipe.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 40.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 106.0
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):0.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 2.11
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.48
Culvert Gradient: 1.00%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Outfall height red
  3. Culvert gradient red
  4. Shallow fill; inadequate roadfill volume above culvert
  5. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelCobble
Subdominant:SandGravel
Stream Slope(deg.):
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 35.0 5.50
Downstream ordinary high water 60.0 4.00
Downstream ordinary high water 90.0 4.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Grade Ctrl (Thalweg) 1 0.00 15.5 93.57
D/S Water Surface Elev 1 0.00 15.5 93.59
D/S Tailcrest or 1st Thalweg 1 5.50 10.0 93.78
D/S Water Surface Elev 1 5.50 10.0 93.80
D/S Thalweg (bottom of outlet pool) 1 14.00 1.5 93.64
Outlet Pool Water Elev 1 15.50 93.83
D/S Thalweg (stream bed below end of pipe) 1 15.50 0.0 93.96
Outlet Invert 1 15.50 0.0 95.94
Road Elev (Bryant Rd) 1 35.50 99.94
U/S Thalweg (pool immed u/s (if water were present)) 1 55.50 0.0 96.20
Inlet Culvert Invert 1 55.50 0.0 96.34

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