Definition of reservoir. 1 : a place where something is kept in store: such asa : an artificial lake where water is collected and kept in quantity for useb : a part of an apparatus in which a liquid is heldc : supply, store a large reservoir of educated people.
Four types of winter precipitation. While all forms of precipitation start as snow high up in the clouds, there are four primary types that eventually reach the ground: snow, sleet, freezing rain and plain ol' rain. Snow occurs when the atmosphere is cold all the way from the clouds to down here at the surface.
It is important to know the difference between snow, sleet, and freezing rain. 1) Snow forms when the entire layer of air is sub-freezing. Snow consists of ice crystals and is white and fluffy. 2) Sleet forms when the layer of sub-freezing air is fairly deep, 3,000 to 4,000 feet.