Answer: undam

AnswerCrossword Clue
UNDAMAllow to run, in a way
UNDAMAllow to flow
UNDAMStop stopping up
UNDAMUnleash, as water.
UNDAMRelease pent-up waters.
UNDAMRelease, as river water.
UNDAMLet loose
UNDAMLet flow
UNDAMOpen, as floodgates
UNDAMStop blocking, as a river
UNDAMAllow to flow freely again
UNDAMAllow to flow again
UNDAMLet flow again
undamto free water from a dam