Low-Water Period

seasonal occurrence of low water levels in rivers. Ordinarily a low-water period must last at least ten days to be classified as such. It results from periods of dry or frosty weather when the water level of a river is maintained primarily by ground water sources and there is a great reduction or cessation of surface runoff. In the moderate and high latitudes, summer and winter low-water periods are distinguished. (A low-water period with ice phenomena is a winter low-water period.)

单词	low-water period
释义	Low-Water Period Low-Water Period seasonal occurrence of low water levels in rivers. Ordinarily a low-water period must last at least ten days to be classified as such. It results from periods of dry or frosty weather when the water level of a river is maintained primarily by ground water sources and there is a great reduction or cessation of surface runoff. In the moderate and high latitudes, summer and winter low-water periods are distinguished. (A low-water period with ice phenomena is a winter low-water period.)
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