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Fish ladders: Number of falls

This tool is an aid for the pre-dimensioning of a fish ladder: it allows to calculate the missing value of the three quantities:

  • the total fall (ΔHT) in m;
  • the fall between basins (ΔH) in m;
  • the number of falls (N);

as well as the residual fall (ΔHR) in m.

Formula

ΔHT=(ΔHN)+ΔHR