A drought is a period of drier-than-normal conditions that results in water-related problems. When no rain or only a very small amount of rain falls, soils can dry out and plants can die.
When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought. Read more
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