San Luis River

The San Luis River is a location featured in Red Dead Redemption in all regions of the New Austin territory. It is a major river system that forms the natural geographic and political border between the New Austin and Nuevo Paraiso territories, separating the United States from Mexico. The river flows out from Flat Iron Lake.

Trivia

 * There are 3 major crossings over the River: Butter Bridge, Frontera Bridge, and Ramita de la Baya.
 * It is the largest river in Red Dead Redemption.
 * The river flows into the Sea of Coronado, which is in the far western part of Gaptooth Ridge.
 * This river parallels the Rio Grande.
 * Until the player completes The Assault on Fort Mercer, he/ she cannot cross the river.