GCIDE(0.00 / 0 votes)Rate this definition: 1  dibs(n.) A small amount of money. 2  dibs(n.) A right or claim, such as the right of use, or of first choice; as, I have dibs on the binoculars after Jim is finished..
Ravines and gullies are erosional features that exist on a continuum of scales. A ravine is defined as a small, narrow, and deep depression, smaller than a valley, and larger than a gully (Bates and Jackson, 1984). Both grow by head cutting. Ravines are usually longer and deeper than gullies. Gullies may be small enough to plow, these are ephemeral gullies.
What is a Watershed? A watershed is the area of land that drains to a particular lake, river or other waterbody. The graphic above, from Michigan Sea Grant, shows how a typical watershed works. Imagine a raindrop falling anywhere inside that watershed; no matter where it lands, it will eventually find its way to the main body of water at the bottom. If it lands lands in another watershed, it will drain to a different waterbody.