water year

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

(hydrology) The timespan between October 1 and September 30 of the next year, differing from the calendar year because part of the precipitation that falls in late autumn and winter accumulates as snow and does not drain until the following spring or summer.

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During a dry water year, reservoir levels can fall to critically low levels, forcing stringent water-use restrictions.

詳細

意味（1）

(hydrology) The timespan between October 1 and September 30 of the next year, differing from the calendar year because part of the precipitation that falls in late autumn and winter accumulates as snow and does not drain until the following spring or summer.

water years （ 複数形 ）