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Construction of dams, levees and other channel improvement structures used for flood control are categorized as :

  • A.Non-structural approach
  • B.Structural approach
  • C.Curvilinear approach
  • D.Staggened approach

Answer: B

They are a Structural approach to flood control.

Flood management is divided into structural measures, which physically change the river or hold back water (dams, reservoirs, levees and embankments, channel improvement, diversions), and non-structural measures, which reduce damage without building works (flood plain zoning, forecasting and warning, insurance, land use control).

Dams and levees are physical structures, so the approach is structural, not non-structural. 'Curvilinear' and 'staggened' are not recognised categories of flood management.

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