You searched for: “alluvial plain
alluvial plain (s) (noun), wash plain, waste plain; alluvial plains, wash plains, waste plains (pl)
A tract of gently sloping land by a river that periodically overflows depositing clay, silt, or gravel which has been brought downstream where the water slows down: Mike and his family decided to pitch their tents on the alluvial plain near the river because it was flat and sandy.

The waste plains look desolate and barren; however, they may be rich in minerals that have been washed down by the river creating an alluvial plain.

 
This entry is located in the following unit: luto-, lut-, luv-, lu- (page 2)