A gaseous upwelling phenomenon known as the "mud lumps" often takes place near a fishing village
 on an old barge called the Taj near the mouth of this river.
A gaseous upwelling phenomenon known as the "mud lumps" often takes place near a fishing village
 on an old barge called the Taj near the mouth of this river. The Coon Rapids dam is the limit of upriver
 navigation on this river and the only natural waterfall on this river was the now-dammed St. Anthony's
 Falls. A series of dams known as the Old River control structure prevents this river's course from switching
 to the Atchafalaya river, and it is crossed by bridges such as the Eads Bridge, the Rock Island Centennial
 Bridge and the Huey P. Long Bridge. For 10 points, identify this distributary of the Red, Ohio, and
 Missouri rivers, the longest river in the United States.
A gaseous upwelling phenomenon known as the "mud lumps" often takes place near a fishing village
 on an old barge called the Taj near the mouth of this river.
{Mississippi} River