Hurricane Beryl - rainmaker a top Ohio & Mississippi Rivers’ confluence at Cairo, IL.
Confluence = meeting of 2 or more bodies of water, to point where tributary joins larger river, main stem, or where 2 streams meet to become source. https://twistedsifter.com/2012/04/confluences-around-the-world
Confluence of MS & Missouri Rivers is near St. Louis, MO & are 2 most significant rivers in US. Combined length = 4th longest river system in world. https://www.geoaffairs.com/top-10-us-states-great-rivers/
TN River, central component world’s greatest irrigation & hydropower & major waterway of SE US is formed by confluence of Holston & French Broad rivers, E of Knoxville, TN, & flows SSW to Chattanooga. Turning W through Cumberland Plateau into NE Alabama, it continues across N AL & bends N on boundary between AL & MS to N through TN & KY, it joins Ohio River at Paducah, KY, after U-shaped course of 886 miles -drainage basin = 40,910 sq. miles. https://www.britannica.com/place/Tennessee-Ri