Definitions for "Streambed"
The part of a stream over which a column of water moves.
The boundary between surface water and groundwater (or impermeable rock), composed of alluvium or surface bedrock.
Keywords:  formerly, ran, occupied, channel, run
The channel through which a natural stream or river runs or once ran through.
a channel occupied (or formerly occupied) by a stream
The channel through which a natural stream of water runs or used to run, as a dry streambed.
Keywords:  bottom, water, below, flows, surface
The bottom of a stream over which water flows.
the bottom of the stream below the usual water surface.
The stream bottom.