Fish Passage Site 20502113

Coordinates (dec. deg.): 61.57636°, -149.72813°
Legal Description: S017N003W12
Region: South Central
Road Name: Private Gravel ATV road

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Little Meadow Creek

Elevation:

Site Comments: Culvert located on ATV gravel road located on Little Meadow Creek behind NAPA store off S. Big Lake Road. Culvert is on gravel road behind the NAPA store and strip mall complex. Culvert is on gravel road behind the NAPA store and strip mall complex.

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-NPA01

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red

Comments: Culvert located on ATV gravel road located on Little Meadow Creek behind NAPA store off S. Big Lake Road. Culvert is on gravel road behind the NAPA store and strip mall complex. Upst area is a flat wide marsh located just dwst of the Parks Highway. Many spawning and dead Sockeye downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 60.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 19.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):6.3 6.35
Height(ft):4.0 3.88
Apron Length(ft):
Water Depth(ft): 1.06
Rustline Height(ft):1.35
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.34
Culvert Gradient: 0.12%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicGravel
Subdominant:GravelSand
Stream Slope(deg.):0.53
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 70.0 18.00
Downstream ordinary high water 183.0 14.50
Downstream ordinary high water 252.0 23.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (water surface for stream grad) 0.00 94.87
D/S Thalweg (GP at top of riffle) 57.00 94.90
D/S Water Surface Elev 57.00 95.20
D/S Thalweg (profile pt in mid riffle) 186.00 95.48
D/S Water Surface Elev 186.00 95.93
D/S Water Surface Elev (water surface for stream grad) 223.00 96.06
D/S Grade Ctrl (Thalweg) (GP at beginning of riffle) 295.00 96.20
D/S Water Surface Elev 295.00 96.90
D/S Water Surface Elev (outlet water surface) 300.00 97.03
Outlet Culvert Top 300.00 100.00
Outlet Invert (invert on substrate) 300.00 95.97
Road Elev 330.00 102.60
Inlet Culvert Top 360.40 100.02
U/S Water Surface Elev (inlet water surface) 360.40 97.10
Inlet Culvert Invert (invert on substrate) 360.40 95.95
U/S Water Surface Elev 390.40 97.15
U/S Thalweg (profile pt) 390.40 96.09

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

Gear Type: Visual Observation, Ground (A)
Comments: Spawning and dead sockeye observed downstream of culvert.

Fish Observations

No fish observations occurred during this survey.

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