Ecoregions of Texas
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Ecoregions of Texas 23 Arizona/New Mexico Mountains 26 Southwestern Tablelands 30 Edwards Plateau 23a Chihuahuan Desert Slopes 26a Canadian/Cimarron Breaks 30a Edwards Plateau Woodland 23b Montane Woodlands 26b Flat Tablelands and Valleys 30b Llano Uplift 24 Chihuahuan Deserts 26c Caprock Canyons, Badlands, and Breaks 30c Balcones Canyonlands 24a Chihuahuan Basins and Playas 26d Semiarid Canadian Breaks 30d Semiarid Edwards Plateau 24b Chihuahuan Desert Grasslands 27 Central Great Plains 31 Southern Texas Plains 24c Low Mountains and Bajadas 27h Red Prairie 31a Northern Nueces Alluvial Plains 24d Chihuahuan Montane Woodlands 27i Broken Red Plains 31b Semiarid Edwards Bajada 24e Stockton Plateau 27j Limestone Plains 31c Texas-Tamaulipan Thornscrub 25 High Plains 29 Cross Timbers 31d Rio Grande Floodplain and Terraces 25b Rolling Sand Plains 29b Eastern Cross Timbers 25e Canadian/Cimarron High Plains 29c Western Cross Timbers 25i Llano Estacado 29d Grand Prairie 25j Shinnery Sands 29e Limestone Cut Plain 25k Arid Llano Estacado 29f Carbonate Cross Timbers 25b 26a 26a 25b 25e Level III ecoregion 26d 300 60 120 mi Level IV ecoregion 26a Amarillo 27h 60 0 120 240 km County boundary 26c State boundary Albers equal area projection 27h 25i 26b 25j 27h 35g 35g 26b Wichita 29b 35a 35c Lubbock 26c Falls 33d 27i 29d Sherman 35a 25j Denton 33d 35c 32a 33f 35b 25j 26b Dallas 33f 35a 35b 27h 29f Fort 35b Worth 33a 26b Abilene 32c Tyler 29b 24c 29c 35b 23a Midland 26c 30d 35a El Paso 24a 23b Odessa 35b 24a 24b 25k 27j 33f Nacogdoches 24d Waco Pecos 25j San Angelo 29e 32c 33b 24c 24a 35b 35e 24d 24d 24e 30d Temple 33f 33C 35e 24d 35b 24d 30b 32a 35f 24d 24e 30a 33c 35f 35b 24b Austin 33b 35b 24d 35f 34a 24b 32c 33e 32b 24c 24a 32c 34a 24d 24b 30c 33f 34a Houston 34g 24c 31b San 32b 34a Antonio Galveston Del Rio 31a 34a 31d 34c 34c 33b Victoria 34a 34h 32 Texas Blackland Prairies 34a 32a Northern Blackland Prairie 34h 32b Southern Blackland/Fayette Prairie 31c 34b 32c Floodplains and Low Terraces 34c 34h 33 East Central Texas Plains 31d Corpus Christi 33a Northern Post Oak Savanna 34b 33b Southern Post Oak Savanna Laredo 33c San Antonio Prairie 34i 33d Northern Prairie Outliers 34d GULF OF MEXICO 33e Bastrop Lost Pines 33f Floodplains and Low Terraces 31d 34 Western Gulf Coastal Plain 34e 34a Northern Humid Gulf Coastal Prairies 34f 34i 34b Southern Subhumid Gulf Coastal Prairies 34c Floodplains and Low Terraces 35 South Central Plains Brownsville 34d Coastal Sand Plain 35a Tertiary Uplands 34e Lower Rio Grande Valley 35b Floodplains and Low Terraces 35c Pleistocene Fluvial Terraces Griffith, G.E., Bryce, S.A., Omernik, J.M., 34f Lower Rio Grande Alluvial Floodplain Comstock, J.A., Rogers, A.C., Harrison, B., 34g Texas-Louisiana Coastal Marshes 35e Southern Tertiary Uplands Hatch, S.L., and Bezanson, D., 2004, Ecoregions 34h Mid-Coast Barrier Islands and Coastal Marshes 35f Flatwoods of Texas, U.S. Environmental Protection 34i Laguna Madre Barrier Islands and Coastal Marshes 35g Red River Bottomlands Agency, Corvallis, OR..