OKTXAR Corner
OKTXAR Corner is a geographic point in the Red River marking the tripoint of the U.S. states of Oklahoma, Arkansas, and Texas. Unlike many other state tripoints, OKTXAR Corner does not have a monument and is located within the river channel, making it likely inaccessible by land. It can potentially be reached by boat, depending on water levels.
Geography
The tripoint lies within the Red River, which forms part of the boundary between Texas and Oklahoma before curving into southwestern Arkansas. The approximate coordinates are, and the elevation is about 292 feet above sea level. Seasonal changes in river flow can shift the exact location of the sandbanks where the corner is sometimes exposed.Historical Context
The Red River has long served as a natural boundary in the region. It was referenced in the Adams–Onís Treaty of 1819 as part of the border between the United States and Spanish Texas. The river also played a role in early trade routes and was the site of the Red River Campaign during the American Civil War.Unlike other tripoints such as Texhomex or the OKKAMO Tri-State Marker, OKTXAR Corner remains unmarked due to its location in a dynamic river environment.