A gulch is a deep V-shaped valley formed by erosion. It may contain a small stream or dry creek bed and is usually larger in size than a gully.[1] Sudden intense rainfall upstream may produce flash floods in the bed of the gulch.
^"Gulch". Interesting and curious generic terms used in Canada. Natural Resources Canada. Archived from the original on 26 September 2011. Retrieved 8 April 2013.