Bottom of the Channel in Which a Waterway Flows

This page is the CodyCross answer for the clue below from Fauna and Flora, Group 169, Puzzle 3 (Ecological Complexity).

Question is: Bottom of the Channel in Which a Waterway Flows

and the answer is: RIVERBED

Word Meaning:

RIVERBED — (hydrology) The path where a river runs, or where a river once ran; the bottom earthen part of a river, not including the riverbanks.

Definitions from Wiktionary.