http://apps.environment-agency.gov.uk/wiyby/37837.aspx "A floodplain is the area that would naturally be affected by flooding if a river rises above its banks, or high tides and stormy seas cause flooding in coastal areas."
"În geomorfologie, albia majoră este o suprafaţa netedă din exteriorul malurilor unui râu, în care apele sale debordează numai la nivele maxime." -http://www.crispedia.ro/Albie_majora