Oklahoma Geography and Geology. Diversity. 70,000 sq miles/45 million acres/18th in size “Panhandle”—added in 1890 Bordered by: Kansas, Colorado, Missouri, Arkansas, Texas, and New Mexico. 10 Distinct Geographic regions KEY WORD—ANOMALY!. 3 MAJOR LANDFORM TYPES:.
Red Bed Plains
Red River Plains10 Geographic Regions
-rainfall: 15 in/yr
McCurtain County: elevation: 300 ft.
-rainfall: 52 in/yr