Fish Passage Site 20502075

Coordinates (dec. deg.): 61.69970°, -149.30302°
Legal Description: S019N001E32
Region: South Central
Road Name: North Waldo Reed Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name:

Elevation:

Site Comments: Replacement Culvert on private drive off North Waldo Reed Road..

Survey Date: Sep 15, 2011

Survey MSB11-NWR02

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: 2011


Site Observations:

  1. Compound gradient in pipe

Comments: A new site with a replacement culvert installed in 2011 on a private drive off North Waldo Reed Road.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 35.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 20.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):5.8 5.9
Height(ft):4.15 3.9
Apron Length(ft):
Water Depth(ft): 0.21
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: 1.1
Culvert Gradient: 5.90%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):5.6
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 36.0 5.00
Downstream ordinary high water 104.0 5.70
Downstream ordinary high water 136.0 5.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (profile pt) 0.00 89.30
D/S Water Surface Elev 0.00 89.66
D/S Thalweg (profile pt) 85.00 93.56
D/S Water Surface Elev 85.00 93.77
Outlet Invert (on substrate) 100.00 93.94
D/S Water Surface Elev (outlet water surface) 100.00 94.15
Outlet Culvert Top 100.00 97.94
Road Elev 115.00 100.44
Inlet Culvert Top 135.00 100.00
Inlet Culvert Invert (on substrate) 135.00 95.86
U/S Water Surface Elev (inlet water surface) 135.00 96.13
U/S Thalweg (Tailcrest) (GP) 140.00 96.19
U/S Water Surface Elev 140.00 96.60
U/S Grade Ctrl (Thalweg) (GP) 147.00 96.63
U/S Water Surface Elev 147.00 96.84
U/S Water Surface Elev (water surface for gradient) 156.00 97.29
U/S Water Surface Elev 199.00 99.65
U/S Water Surface Elev (water surface for gradient) 231.00 101.03

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