Rio des Apostolos, United States (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
History of the Expedition under the Command of Captains Lewis and Clark / To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"the streams of which he spoke were southern branches of the Columbia, heading with the Rio des Apostolos, and Rio Colorado"