Fish Passage Site 20501162

Coordinates (dec. deg.): 61.59507°, -149.75616°
Legal Description: S017N003W02
Region: South Central
Road Name: Alaska Railroad

Datum: WGS84
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: AKRR MP 170.55

Survey Date: Aug 27, 2009

Survey MSB09-ARR05

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: Stream dry, but well-defined & muddy; culvert braced w/RR ties; channel actively narrowing; outlet partly filled.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 70.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.3
Corrugation Width(in.): 2.3
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):5.0 4.9
Height(ft):5.1 3.6
Apron Length(ft):
Water Depth(ft): 0.0
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 1.5
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.36
Culvert Gradient: 0.54%
Max Slope:
Max Slope Length:
 

Comments: Dry at the time of survey.
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:Dry, Defined Channel
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 40.0 2.00
Upstream ordinary high water 68.0 5.00
Upstream ordinary high water 83.0 4.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (in dry channel) 1 0.00 9.0 93.88
Outlet Invert 1 9.00 0.0 94.78
Road Elev ((railroad)) 1 44.00 113.16
Inlet Culvert Invert 1 79.40 0.0 95.16

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