Texas Environmental Almanac Map Section

Texas Eight Major Regions

PLEASE SELECT REGION TO LINK TO RELATED CHAPTER TEXT

Population figures are from 1990.

Source (includes all regional graphs): Texas Water Development Board, Water for Texas 1990: Today and Tomorrow (Austin: TWDB, 1990); and Texas Water Development Board, "Draft Projections of Population and Municipal Water Use," 1996 Consensus Water Plan.

UPPER RIO GRANDE AND FAR WEST TEXAS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	El Paso	Average Annual Precipitation:	8 to 18 inches
Population, 1990:	615,196	Annual Net Evaporation Rate:	66 inches
Total Water Use, 1990:	526,103 acre-feet	Major Economic Sectors:	Mineral Production,Manufacturing, Retail and Wholesale Trades, Agriculture, Tourism and International Trade.
Population, 2040:	1,367,668	Physiography:	Flat to rolling to mountainous, sparsely-vegetated desert with flat, floodplain areas adjacent to Rio Grande.
Total Water Use, 2040:	559,245 acre-feet	Primary River:	Rio Grande
		Major Aquifer:	Hueco-Mesilla Bolson

HIGH PLAINS AND TRANS-PECOS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	Lubbock, Amarillo, Midland, Odessa	Average Annual Precipitation:	10 to 22 inches
Population, 1990:	1, 097, 609	Annual Net Evaporation Rate:	53 inches
Total Water Use, 1990:	6, 113, 219 acre-feet	Major Economic Sectors:	Agriculture, Agri-business, Mineral Production, Manufacturing, Retail and Wholesale Trade.
Population, 2040:	1,583,323	Physiography:	In the High Plains, level plains in the south and southeast changing to arid, flat plains of Trans-Pecos area rising to high mountains.
Total Water Use, 2040:	5,320,539 acre-feet	Primary Rivers:	Canadian, Red, Brazos, Colorado, Pecos
		Major Aquifers:	Ogallala, Cenozoic, Pecos,Alluvium, Edwards-Trinity

WEST CENTRAL TEXAS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	Abilene, Wichita Falls	Average Annual Precipitation:	19 to 30 inches
Population, 1990:	518,465	Annual Net Evaporation Rate:	51 inches
Total Water Use, 1990:	370, 955 acre-feet	Major Economic Sectors:	Mineral Production, Agriculture, Agri-Business, Manufacturing, Retail and Wholesale Trade, Government.
Population, 2040:	603,856	Physiography:	Rolling prairies in the west turn to flat, relatively treeless prarie and cross timber country in the east.
Total Water Use, 2040:	344,896	Primary Rivers:	Red, Colorado, Brazos
		Major Aquifer:	Seymour

NORTH TEXAS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	Dallas, Fort Worth, Denton, Sherman, Waco, Temple	Average Annual Precipitation:	26 to 40 inches
Population, 1990:	4,852,254	Annual Net Evaporation Rate:	41 inches
Total Water Use, 1990:	1,258,691 acre-feet	Major Economic Sectors:	Manufacturing, Retail and Wholesale Trade, Finance, Services, Transportation and Tourism.
Population, 2040:	9,136,942	Physiography:	From flat to rolling wooded cross timbers in the west to wooded rolling hills and flat lands of the Blacklandsand Post Oak Belt in the east.
Total Water Use, 2040:	1,934,135 acre-feet	Primary Rivers:	Red, Trinity, Brazos
		Major Aquifer:	Trinity

NORTHEAST TEXAS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 -2040
Major Cities:	Texarkana, Tyler, Longview, Marshall	Average Annual Precipitation:	42 to 48 inches
Population, 1990:	901, 300	Annual Net Evaporation Rate:	20 inches
Total Water Use, 1990:	595, 849 acre-feet	Major Economic Sectors:	Manufacturing, Wholesale and Retail Trade, Services, Mineral Production, Agriculture and Agri-business.
Population, 2040:	1,127,011	Physiography:	Flat wooded areas to very wooded rolling hills and river valleys.
Total Water Use, 2040:	785,981 acre-feet	Primary Rivers:	Red, Sulphur, Cypress, Sabine, Neches
		Major Aquifer:	Carrizo-Wilcox

SOUTH CENTRAL TEXAS WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	San Antonio, Austin, San Angelo, Del Rio	Average Annual Precipitation:	14 to 42 inches
Population, 1990:	2, 718, 316	Annual Net Evaporation Rate:	17 inches
Total Water Use, 1990:	1, 564, 590 acre-feet	Major Economic Sectors:	Manufacturing, Retail and Wholesale Trade, Agriculture, Agri-business, Mineral Production, Government and Tourism.
Population, 2040:	6,453,944	Physiography:	Rolling, grassy prairies in the west leading to hilly, wooded hill country in the central and eastern parts of the region.
Total Water Use, 2040:	1,995,852 acre-feet	Primary Rivers:	Colorado, Guadalupe, Nueces, San Antonio, Rio Grande
		Major Aquifers:	Edwards-BFZ, Edwards-Trinity, Carrizo-Wilcox

SOUTHEAST TEXAS AND UPPER GULF COAST WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	Houston, Galveston, Beaumont, Orange, Port Arthur, Victoria	Average Annual Precipitation:	32 to 56 inches
Population, 1990:	4,933,364	Annual Net Evaporation Rate:	45 inches
Total Water Use, 1990:	3,698,499 acre-feet	Major Economic Sectors:	Manufacturing, Mineral Production, Finance, Services, Retail and Wholesale Trade, Agriculture, Tourism, Commercial Shipping and Fishing and Government.
Population, 2040:	9,437,876	Physiography:	Rolling, hilly wooded area in East Texas turning into grassy, flat coastal plains.
Total Water Use, 2040:	4,195,071 acre-feet	Primary Rivers:	Sabine, Neches, Trinity, San Jacinto, Brazos, Colorado, Lavaca, Guadalupe
		Major Aquifer:	Gulf Coast

SOUTH TEXAS AND LOWER GULF COAST WATER SUPPLY AND DEMAND DISTRIBUTION, 1990 - 2040
Major Cities:	Corpus Christi, Laredo, McAllen, Brownsville	Average Annual Precipitation:	21 to 40 inches
Population, 1990:	1, 350, 320	Annual Net Evaporation Rate:	53 inches
Total Water Use, 1990:	1,654,501 acre-feet	Major Economic Sectors:	Agriculture, Agri-business, Manufacturing, Retail and Wholesale Trade, Services, Mineral Production, Tourism and International Trade.
Population, 2040:	3,282,085	Physiography:	Flat, grassy coastal plains with flood plains near the coast and Rio Grande river valley.
Total Water Use, 2040:	1,593,503 acre-feet	Primary Rivers:	Nueces, Rio Grande
		Major Aquifer:	Gulf Coast

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