Answer: coulees

AnswerCrossword Clue
COULEESSmall valleys
COULEESDeep ravines.
COULEESDeep gulches, out West
COULEESWestern ravines
COULEESGulches
couleesCOULEE, a small ravine (a narrow, steep-sided valley)
couleeslow-lying area
couleessmall intermittent stream
couleesdeep ravine or gulch, usually dry, that has been formed by running water
couleessmall valley
couleesstream of lava