Counties in Region: WINKLER, WARD, UPTON, TOM GREEN, SUTTON, STERLING, SCURRY, SCHLEICHER, RUNNELS, REEVES, REAGAN, PECOS, MITCHELL, MIDLAND, MENARD, MCCULLOCH, MASON, MARTIN, LOVING, KIMBLE, IRION, HOWARD, GLASSCOCK, ECTOR, CROCKETT, CRANE, CONCHO, COLEMAN, COKE, BROWN, BORDEN, ANDREWS Major Cities: San Angelo, Odessa, Midland Population 2000: 638,203 Population 2050: 921,907 Total Water Use, 2000: 881499 Acre-Feet Total Water Use, 2050: 900230 Acre-Feet Primary Rivers: Colorado, Rio Grande Major Aquifers: Edwards-Trinity Plateau, Cenozoic Pcos Aluuvium, Ogallala Annual Precipitation:  8-28 Inches Net Evaporation: 36-68 Inches Regional Planning Activity Information From The Teaxs Water Development Board

SUPPLY 1995   DEMAND 2000   DEMAND 2050 SOURCE PERCENT   SECTOR ACRE-FEET PERCENT   SECTOR ACRE-FEET PERCENT Groundwater 75%   Irrigation 648652 73.6%   Irrigation 618629 68.7% Surfacewater 25%   Manufacturing 8641 1.0%   Manufacturing 12123 1.3%       Livestock 24509 2.8%   Livestock 24509 2.7%       Mining 31236 3.5%   Mining 21161 2.4%       Municipal 147106 16.7%   Municipal 185258 20.6%       Power 21355 2.4%   Power 38550 4.3%

• Population growth will be moderate.
• Irrigation use as a category is projected to decline from 76 percent to 56 percent of total water use by 2050.
• The major cities in the region-Odessa, Midland, and San Angelo-receive their water from reservoirs built on the Colorado River. High levels of dissolved minerals and nutrients necessitate expensive treatment and degrade the quality of the water.
• Petroleum industry activities in Loving, Ward, and Winkler counties and irrigation practices in Pecos, Reeves, and Ward counties have degraded the water quality of the Cenozoic Pecos Alluvium Aquifer.
• Depletion of the Ogallala Aquifer in the north part of the planning area is of significant concern, especially for agriculture.

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