Streams are different from gullies because it doesn't dry up.
Unlike gullies, streams rarely dry up.
Both have to do with water
A network of gullies, streams, and rivers in an area
A network of rills, gullies, streams, and rivers in an area.
A network of rills, gullies, streams, and rivers in an area.
A river system
Ephemeral streams are streams that only have running surface water after a rain storm. During most of the year they are dry gullies or arroyos.
Precipitation -- rain and snow cause flowing water in nature.
a rill makes a gully a gully makes a stream a stream makes a river
Ephemeral streams are streams that only have running surface water after a rain storm. During most of the year they are dry gullies or arroyos.
Runoff causes erosion which makes ripples in the ground and the some ripples turn into gullies (small rivers or streams) that may end up like the Grand Canyon..
Nothing Natural features would include changing elevations (gullies right up to mountains), volcanos, rivers/streams/creeks, and vegetation.