Additional Hydraulic Design Issues

• Performance related to hydraulic efficiency

  • minimize short circuiting - 2D models
  • plug field ditches parallel to flow
  • use spreader canals, collection canals
  • leave transverse canals for redistribution

• Maximum velocity in marsh: 0.1 ft/sec

  • in canal: 2.5 ft/sec

• Vegetation resistance

  • Manning’s “n” depth dependent; long flow paths (up to 5 miles) with dense vegetation

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