Answer: dammed

AnswerCrossword Clue
DAMMEDErected a barrier, in a way
DAMMEDWorked like a beaver
DAMMEDBlocked, beaver-style
DAMMEDBuilt a dike
DAMMEDBlocked the flow.
DAMMEDObstructed.
DAMMEDHeld back, as water
DAMMEDBuilt a weir
DAMMEDImpeded
DAMMEDBlocked
DAMMEDBlocked, as a river
DAMMEDLike the Columbia River
DAMMEDImpeded the flow of
dammedDAM, to build an embankment to retain water
dammedto stop up
dammedbarrier to obstruct the flow of water