Causes And Effects Of Floods And Droughts DROUGHT Sometimes it does not rain for a long time—for an entire month, two months, the whole season, two years, etc. The abnormally long period of insufficient or no rainfall at all is called drought.During drought, rivers run dry, water level in lakes goes down, and even the water in the soil dries up. There is very little … [Read more...] about What Do You Mean By Drought And Floods