Noun: drainage area 'drey-nij'eh-ree-u
- The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
"flood control in the Missouri drainage area";
- river basin, basin, watershed, drainage basin, catchment area, catchment basin
Derived forms: drainage areas
Type of: geographic area, geographic region, geographical area, geographical region
Encyclopedia: Drainage area