Fish Passage Site 20501205

Coordinates (dec. deg.): 61.58122°, -149.59407°
Legal Description: S017N002W11
Region: South Central
Road Name: Bike Path

Datum: WGS84
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Site is between Parks Hwy and RR on bike path.

Survey Date: Sep 17, 2009

Survey MSB09-PBP02

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. None of this type

Comments: Site is between Parks Hwy and RR on bike path. Spiral corrugated pipe.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 36.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.25
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 20.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 3.0
Apron Length(ft):
Water Depth(ft): 0.52
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.81
Culvert Gradient: -0.17%
Max Slope:
Max Slope Length:
 

Comments: Culvert has adverse gradient.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 3.40
Upstream ordinary high water 35.0 4.00
Upstream ordinary high water 50.0 3.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 97.56
U/S Headwater (pool immed. u/s) 1 97.56
D/S Water Surface Elev (d/s WS) 1 0.00 4.0 97.49
Outlet Invert 1 4.00 0.0 97.04
Road Elev ((bike path)) 1 22.00 101.77
Inlet Culvert Invert 1 40.00 0.0 96.98

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