Fish Passage Site 20501047

Coordinates (dec. deg.): 61.64993°, -149.56450°
Legal Description: S018N002W13
Region: South Central
Road Name: West Sunrise Road

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

Elevation:

Site Comments: None

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 MSB11-SUN01

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: John Greuey, Abraham Gioffre

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2010


Site Observations:

  1. None of this type

Comments: Survey was on a replacement culvert. Upst and dwst are continuous riffles.

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 57.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 5
Approach Angle: 14.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Cobble
InletOutlet
Width(ft):10.3 10.6
Height(ft):4.8 5.3
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.01
Rustline Height(ft):0.0
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.1
Culvert Gradient: 2.04%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):2
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 66.0 11.00
Downstream ordinary high water 111.0 9.00
Downstream ordinary high water 145.0 8.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (water surface elev used for gradient) 0.00 92.74
D/S Water Surface Elev (water surface elev used for gradient) 100.00 94.71
D/S Water Surface Elev 106.00 95.02
D/S Thalweg (profile pt in riffle) 106.00 94.56
Outlet Invert (invert on substrate) 145.00 94.58
D/S Water Surface Elev (outlet water surface elev) 145.00 95.59
Outlet Pool Water Elev (Outlet pool water surface in eddy area) 145.00 95.64
Outlet Culvert Top 145.00 100.00
Road Elev 167.00 103.68
Inlet Culvert Top 202.80 101.18
Inlet Culvert Invert (invert on substrate) 202.80 96.31
U/S Water Surface Elev (inlet water surface elev) 202.80 96.82
U/S Headwater (water surface elev of eddy at inlet) 202.80 96.86
U/S Water Surface Elev 240.80 97.52
U/S Thalweg (profile pt in riffle) 240.80 96.70

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