11. Love County is within the Red River Plains physiographic region , with a rolling to hilly topography. 12. The county contains parts of several physiographic regions , including the Arbuckle Mountains, the Red River. 13. The county is in the Coastal Plains physiographic region , and is mostly drained by the Blue River. 14. It forms a rough boundary between the Shawnee Hills physiographic region to the northeast and the Mississippian limestone bedrock. 15. The Saw Mill's basin is part of the Manhattan Hills in the New England Uplands physiographic region . 16. In terms of its United States physiographic region , it is a southern part of the Basin and Range Province. 17. The county is part of the Osage Plains and lies within the Western Red Prairies physiographic region and Gypsum Hills subregion. 18. It lies within the physiographic region known as the Rolling Plains in the highly eroded valley of the Salt Fork Brazos River. 19. Western Greer County lies in the Gypsum Hills, while the eastern one-third is in the Red Bed Plains physiographic region . 20. The topography is steep hill country, part of the Allegheny Plateau, a physiographic region that is part of the Appalachian Mountains.
