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lamm on piirkond, mida määratletakse veetaseme teoreetilise tõusu kaudu üleujutuse korral, mille statistiline kordumisintervall võib olla 100 või 500 aastat.
flood plains are areas demarcated by the theoretical levels that waters would reach during flooding, the statistical recurrence interval for which could be 100 or 500 years.
