International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(3225) Tapoon, or Ponding method
A method of measurement of seepage losses from canals when a selected canal section is segregated by dikes at each end. Seepage losses may be determined by measuring the inflow required to maintain the water level in the ponded section at a given level or by measuring volumetric loss from water surface area and rate of recession, due allowance being made for evaporation.

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