The state closest to the Pacific Ocean that is almost completely drained by the Mississippi River and its tributaries is Missouri. The Mississippi River forms part of the eastern border of the state, and many of its tributaries, such as the Missouri and Meramec rivers, flow within the state, contributing to the overall drainage in the Mississippi River watershed.
Delta
Drainage Basin
Basin
The area drained by a river and its tributaries.
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Delta
A tract of land that is drained by a river and its tributaries.
A tract of land that is drained by a river and its tributaries.
A river system that operates inside a drainage basin. A drainage basin is the area of land drained by a river and its tributaries.
a wide mass of land drained by a river and its tributaries or draining into a lake.
Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela