Definition of "brooklet"

Vast forests have disappeared from mountain spurs and ridges; […] rivers famous in history and song have shrunk to humble brooklets; […]

1874, George P. Marsh, The Earth as Modified by Human Action‎

There was a very light off-shore wind and scarcely any breakers, so that the approach to the shore was continued without finding bottom; yet though we were already quite close, we saw no indication of any indention in the coast from which even a tiny brooklet might issue, and certainly no mouth of a large river such as this must necessarily be to freshen the ocean even two hundred yards from shore.

1918 September–November, Edgar Rice Burroughs, “The Land That Time Forgot”, in The Blue Book Magazine, Chicago, Ill.: Story-press Corp.; republished as chapter IV, in Hugo Gernsback, editor, Amazing Stories, (please specify |part=I, II, or III), New York, N.Y.: Experimenter Publishing, 1927,