LYCOS RETRIEVER 
Edwards Plateau: Pecos River
built 608 days ago
The climate and geology of the Edwards Plateau combine to produce dynamic fluvial processes dominated by rare cataclysmic floods. The harsh semiarid conditions result in little human impact on the rocky limestone surface. The few towns include Ozona (O), Comstock (C), and Langtry (L)-famous for Judge Roy Bean's "law west of the Pecos." Annual rainfall averages between 30 and 60 cm, with values increasing along a west-to-east gradient. However, rainfall is extremely variable. Droughts of several years are common, and single storms can locally exceed the annual rainfall. Daily summer temperature maxima typically exceed 37.7°C (100°F) for most of June, July, and August.
Source:
Each of the different general units or divisions of the Edwards Plateau has a distinct overall (and component) vegetation. There are transitions in vegetation where the Edwards Plateau joins the other Vegetational Areas like the Cross Timbers, Rolling Red Plains, and Trans-Pecos Basin-Range, the latter Area designated by proper title of the Basin and Range physiographic province. This subdivisions (Amos and Gehlbach (1988. ps. 1-6) were indicated in the treatment below.
Source:
The rocks that compose the Edwards-Trinity aquifer are relatively flat-lying and are generally exposed at the land surface in the Trans-Pecos and the Edwards Plateau areas (fig.78). The geologic formations that compose the Trinity and the Edwards aquifers generally are exposed in updip areas, but they dip eastward and southward beneath younger units and lie deep in the subsurface. The downdip boundary of each aquifer approximately coincides with the farthest updip extent of water that contains 10,000 milligrams per liter dissolved solids.
Source:
MORE ABOUT
Pecos River