freshet

A word long used for pools or ponds, when swollen after rain or temporary inundations. It is also applied to a pond supplied by a spring.

Freshet
·adj A stream of fresh water. II. Freshet ·adj A flood or overflowing of a stream caused by heavy r...

Webster's Dictionary of the English Language
freshet
A flood or overflowing of a river, by means of heavy rains or melted snow; an inundation.--Webster. ...

Dictionary of American Words And Phrases by John Russell Bartlett.