This river's headwaters come from Lake (*) Itasca.
A byway that follows the entire length of this river is designated by a sign with a green pilot's wheel and is called the Great River Road. This river's 1927 flood led to the passage of the 1928 Flood Control Act. The Old River Control Structure was set up to stop this river from distributing too much of flow to the Atchafalaya River. This river's headwaters come from Lake (*) Itasca. For 10 points, name this river that passes through ten states after it originates in Minnesota and before it empties from Louisiana into the Gulf of Mexico.
A byway that follows the entire length of this river is designated by a sign with a green pilot's wheel and is called the Great River Road.
{Mississippi} River