Sunday, August 30, 2026 Search My Trip EnglishChinese
World news · travel · culture
Taiwan The Taiwan Times
Taiwan's window to the world

Cimarron River

The 191st longest river in the world

1,123 km

The Cimarron River (SIM-ə-ro (h)n; Iowa-Oto: Ñíxgu or Ñíhgu, meaning "Salt River"; Cheyenne: Hotóao'hé'e) extends 698 miles (1, 123 km) across New Mexico, Oklahoma, Colorado, and Kansas. The headwaters flow from Johnson Mesa west of Folsom in northeastern New Mexico. Much of the river's length lies in Oklahoma, where it either borders or passes through 11 counties. No major cities are along its route. The river enters the Oklahoma Panhandle near Kenton, Oklahoma, crosses the corner of southeastern Colorado into Kansas, re-enters the Oklahoma Panhandle, re-enters Kansas, and finally returns to Oklahoma, where it joins the Arkansas River at Keystone Reservoir west of Tulsa, Oklahoma, its only impoundment. The Cimarron drains a basin that encompasses about 18,927 square miles (49, 020 km2).

Flows through: United States.

River data from Wikidata (CC0); lengths normalised to a common unit.

Other major rivers

  1. Amazon6,992 km
  2. Nile6,650 km
  3. Yangtze River6,300 km
  4. Bian River5,806 km
  5. Yellow River5,464 km
  6. Paraná River4,880 km
  7. River Congo4,700 km
  8. Mekong River4,350 km