31 states hewood jablome
Drainage Basin
Drained
Delta
Louisiana.
the Mississippi.
watershed
the Mississippi.
My understanding is that it consisted of all the land drained by the Mississippi-Missouri river complex. The exact boundaries were not at all precise.
The answer is Montana!
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.
Mississippi River
The state of Mississippi is the 32nd largest of the US states. (The Mississippi River is the longest single river in the US. The Jefferson-Missouri-Lower Mississippi combination is the longest combined flowing river, 4th longest in the world, although much of the western Missouri is not navigable.)