The Mississippi River is the largest river system in the United States of America. It flows entirely in the United States, through thirty-one states, and up into Canada. The Mississippi ranks as the fourth longest river, just after the Nile, the Amazon, and the Yangtze, and tenth largest among the world's largest rivers.

Percy Jackson and the Olympians

The Lightning Thief

Percy Jackson fights Echidna and the Chimera at the Gateway Arch. When the Chimera poisons Percy he jumps into the polluted waters of the Mississippi River. He then discovers some of his water powers such as breathing underwater and keeping things dry, when a Nereid tells him to go to Santa Monica Beach.

The Kane Chronicles

The Red Pyramid

After passing Thoth’s test, Carter and Sadie Kane are teleported from Graceland to Pyramid Arena on the banks of the Mississippi.


  • The Mississippi River forms part of the boarder for the states of Iowa, Wisconsin, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Louisiana, and Mississippi.
  • The Mississippi River also passes through the states of Minnesota and Louisiana.
Locations (CHB)
Magical Locations: Aeolia | Camp Half-Blood | Camp Jupiter | Cave of Trophonius | C.C.'s Spa and Resort | Daedalus' Workshop | Lotus Hotel and Casino | Mount Othrys | Ogygia | Olympus | Pan's Cave | Sea of Monsters | The Labyrinth | Tartarus | Underworld | Waystation
Cities, States, and Towns: Alaska | Bar Harbor | Bologna | Chicago | Dalmatia | Denver | Detroit | Florida | Gila Claw | Indianapolis | Jamestown | Miami | Montauk | New Mexico | New York City | Omaha | Palm Springs | Quebec City | San Francisco | St. Augustine | St. Louis | Texas | Utah | Vancouver | Venice | Westport
Countries: Canada | Croatia | France | Greece | Italy | Portugal | United States of America
Other Locations: Apennine Mountains | Aunty Em's Gnome Emporium | Carlsbad Caverns | Crusty's Water Bed Palace | Empire State Building | Gateway Arch | Grand Canyon | Greece | Hoover Dam | Junkyard of the Gods | Mississippi River | Mount Diablo | Mount Etna | Mount Saint Helens | Mount Tamalpais | Pikes Peak | Polyphemus' Island | Puerto Rico | ROFL | Rome | Triple G Ranch | United States Virgin Islands | Waterland