A dry gully is a depression in the earth that is the result of erosion after violent rainstorms. These gullies are usually dry unless there has been rain.
A dry gully is called a gulch or a arroyo.
gully
arroyo
Arroyo
arroyo
a wash
Arroyo ; " A deep gully cut by an intermittent stream; a dry gulch. "
A wash is an arroyo, or gully or wadi that is normally dry but quickly fills with water after a heavy rain.
Arroyo, gully, wash or wadi depending on the area of the world and local language customs.
gully erotion is something that makes trenches
The plural of gully is gullies. As in "this is the gullies".
Depending upon the area of the world it may be called an arroyo, a wash, a gully, a gulch or a wadi.