Fish Passage Site 20401354

Coordinates (dec. deg.): 61.57931°, -149.29241°
Legal Description: S017N001E09
Region: South Central
Road Name: Lower Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019-3041-4013
Stream Name: Wasilla Creek tributary

Elevation:

Site Comments: Lower Road - near Hyer Road. Stream joins with other tributary, then goes under Hyer 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 MSB09-LOW02

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2003


Site Observations:

  1. Culvert gradient gray
  2. Compound gradient in pipe

Comments: Post-replacement survey of MSCS1WA051.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 48.0
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 9.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.1 4.0
Height(ft):2.3 2.0
Apron Length(ft):
Water Depth(ft): 0.12
Rustline Height(ft):0.5
Substrate Depth(ft):0.5 0.9
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.77%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:Silt/ClayGravel
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)
Road Elev 1 106.11
D/S Water Surface Elev (d/s end of continuous water) 1 0.00 40.0 97.70
D/S Thalweg (probably end of buried apron) 1 36.50 3.5 97.90
Outlet Invert (on subs; also TC of pool just inside pipe) 1 40.00 0.0 97.96
Outlet Pool Water Elev 1 40.00 98.08
Inlet Culvert Invert (on substrate) 1 88.00 0.0 98.33
U/S Headwater 1 88.00 98.53
U/S Grade Ctrl (Thalweg) (TC of u/s pool) 1 98.00 10.0 98.64
U/S Water Surface Elev (ws @ gp) 1 98.00 10.0 98.84

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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