dam up

(redirected from dammed up)

dam up

To block something from flowing freely, typically water in a stream, river, etc. A noun or pronoun can be used between "dam" and "up." If we don't dam up the river, this rain will cause a flood.
See also: dam, up

dam something up

to erect a barrier in a river, stream, brook, etc. We are going to have to dam this stream up to make a pond for the cattle. Let's dam up this stream. Why is this river dammed up?
See also: dam, up
References in classic literature ?
Here, not merely the river itself, but every rivulet flowing into it, was dammed up by communities of industrious beavers, so as to inundate the neighborhood, and make continual swamps.