A gully is a landform created by running water, mass movement, or both, which erodes soil to a sharp angle, typically on a hillside or in river floodplains or terraces.
A gully in Avaré, Brazil
Gullied landscape in Somalia
A gully in Saratov Oblast, Russia
Inside the gully (to the left) in Saratov Oblast, Russia.
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. Sudden intense rainfall upstream may produce flash flood
Gully
…Draw (terrain) – Long area of downward-sloping low ground Gulch – Deep V-shaped valley formed by erosion Lavaka – Type of gully, formed via groundwater sapping…
A dry gulch in the desert near Tamchy, Kyrgyzstan. The creek that may have run along the bottom of the gulch in the past has been diverted to a parallel aryk.
Witches Gulch found in the Dells of the Wisconsin River