The Surface at the Bottom of a Stream Etc
This page is the CodyCross answer for the clue below from World of Books, Group 285, Puzzle 3 (Interlibrary Loans).
Question is: The Surface at the Bottom of a Stream Etc
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.