Quick Facts on the Geography of Oklahoma

• Oklahoma has four mountain ranges: Ouachitas, Arbuckles, Wichitas, and the Ozarks.
  
  
• Forests cover 24 percent of Oklahoma.
  
  
• The Poteau River is the only river in Oklahoma that flows north.
  
  
• The world's largest single deposit of pure alabaster may be found in the Alabaster caverns near Freedom, Oklahoma.
  
  
• Oklahoma is linked to the world's waters by the McClellan-Kerr Navigation system--flowing on the Arkansas River through Arkansas to the Mississippi River to the Gulf of Mexico.
  
  
• The highest elevation in the state is Black Mesa, 4,978 feet, in far northwestern Oklahoma.
  
  
• The lowest elevation in the state is in the southeast corner near Idabel, at 324 feet.
  
  
• Oklahoma has the distinction of having the highest hill in the world, Mount Cavanal, at 1,999 feet.
  
  
• Oklahoma has more man-made lakes (200) than any other state, over one million surface-acres of water, and 2,000 more miles of shoreline than the Atlantic and Gulf coasts combined.
  
  
• The largest lake in Oklahoma is Lake Eufaula, covering 102,000 surface acres of water.