Fish Passage Site 20502074

Coordinates (dec. deg.): 61.69886°, -149.30252°
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: New culvert.

Survey Date: Sep 14, 2011

Survey MSB11-NWR01

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


Comments: A new site on North Waldo Reed Road. Culvert was a newly installed pipe with stream restoration done on the channel as well. Channel is a small drainage which receives drainage from a secondary channel about 45' upst and a small pond. Some small pools are present formed by woody debris and roots.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 30.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):6.0 6.0
Height(ft):3.9 4.1
Apron Length(ft):
Water Depth(ft): 0.22
Rustline Height(ft):
Substrate Depth(ft):2.1 1.9
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.9
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.0
Culvert Gradient: 2.20%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelSand
Subdominant:SandSilt/Clay
Stream Slope(deg.):5.7
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 55.0 2.80
Upstream ordinary high water 68.0 2.90
Upstream ordinary high water 111.0 3.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (profile pt) 0.00 93.91
D/S Water Surface Elev 0.00 94.46
Outlet Invert (on substrate) 45.00 94.69
D/S Water Surface Elev (outlet water surface) 45.00 94.91
Outlet Culvert Top 45.00 98.80
Road Elev 60.00 100.46
Inlet Culvert Top 75.50 99.48
Inlet Culvert Invert (on substrate) 75.50 95.48
U/S Water Surface Elev (inlet water surface) 75.50 95.82
U/S Grade Ctrl (Thalweg) (GP) 87.50 96.33
U/S Water Surface Elev 87.50 96.52
U/S Water Surface Elev (water surface for gradient) 100.50 97.30
U/S Water Surface Elev (water surface for gradient) 155.50 100.46

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