Fish Passage Site 20501083

Coordinates (dec. deg.): 61.57822°, -149.73013°
Legal Description: S017N003W12
Region: South Central
Road Name: West Parks Highway

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #: 247-50-10330-2050-3050-4019
Stream Name: Little Meadow Creek tributary

Elevation:

Site Comments: Another culvert approx 100' dwst which is a gravel ATV road.

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-PRK10

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. Culvert gradient red

Comments: Upst area is a wide marshland with no defined channel and dwst area drains through another culvert approx 100' dwst which is a gravel ATV road. No stream widths collected as area dwst was influenced by both culverts and also no stream gradient taken for same reason. Further dwst of second culvert was very brushy so no gradient could be taken. Several adult Sockeye observed upst although they had difficulty swimming through the pipe. Fish spawning adjacent to pipe.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 124.5
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 6.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 3.9
Height(ft):4.0 3.85
Apron Length(ft):7.0 7.0
Water Depth(ft): 0.96
Rustline Height(ft):3.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.45%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:OrganicOrganic
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (profile point in pool area) 0.00 87.32
D/S Water Surface Elev 0.00 88.42
D/S Water Surface Elev 25.00 88.44
D/S Thalweg (profile point in grassy pool area) 25.00 87.30
D/S Water Surface Elev (End of apron water surface) 50.00 88.46
Misc. (Outlet end of apron invert) 50.00 87.65
Outlet Invert (on substrate) 57.00 87.50
D/S Water Surface Elev (outlet water surface) 57.00 88.46
Outlet Culvert Top 57.00 91.50
Road Elev 107.00 100.00
Inlet Culvert Top 181.50 93.30
U/S Water Surface Elev (Inlet water surface) 181.50 89.80
Inlet Culvert Invert (on pipe) 181.50 89.31
Misc. (End of apron inlet invert) 188.50 89.76
U/S Water Surface Elev 188.50 89.98
U/S Water Surface Elev (Upst pool water surface elevation) 206.50 90.03
U/S Thalweg (Upst pool substrate) 206.50 87.84

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: Several spawning sockeye observed upst and dwst.

Fish Observations

Species: adult spawning sockeye salmon Life History: Anadromous
Total Fish Observed: 5 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Visual Observation, Ground (5)  

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov