Unlike adjacent ecological regions, little of the Southwestern Tablelands is in cropland. Much of this elevated tableland is in sub-humid grassland and semiarid grazing land.
Higher and drier than the Central Great Plains to the east, much of the Western High Plains comprises smooth to slightly irregular plains having a high percentage of cropland.
The Central Great Plains are slightly lower, receive more precipitation, and are somewhat more irregular than the Western High Plains to the west. Once a grassland, with scattered low trees and shrubs in the south, much of this ecological region is now cropland.
These three ecoregions include an assemblage of over 2,000 native species of plants and animals. In addition, the area overlays the world’s largest aquifer—the High Plains (Ogallala) Aquifer. This important water source is critical to the health and survival of both human populations and wildlife in the heartland of America.
The area covers parts of five states: the northernmost Panhandle of Texas, western Oklahoma, eastern New Mexico, eastern Colorado, and westernmost Kansas. The economy is based on cattle, irrigated and dry farming, and some natural-gas and petroleum extraction.
Click on image for larger map
Go to Top
Data, Maps, and Models
Geospatial data, maps, and models used in and produced by the REAs will be made available to the public upon final completion of each individual assessment.
Memos and Reports
For each REA, there is a series of memos which are supplemental documents to the final report. Memos document the major tasks and decision points made during the assessments and provide pertinent background information necessary to understand the justification and methods used during the assessment. As memos and the final report are completed, they can be downloaded through the table below.
Go to Top