Denton County topographic map

Much of the city was built on forested land, marshes, or swamps, and all are still visible in surrounding areas. Flat terrain and extensive greenfield development have combined to worsen flooding. Downtown stands about 50 feet (15 m) above sea level, and the highest point in far northwest Houston is about 150…

Average elevation: 25 m

Average elevation: 297 m

Average elevation: 87 m

Average elevation: 212 m

Average elevation: 339 m

Average elevation: 156 m

Lewisville is at 33°2′18″N 97°0′22″W / 33.03833°N 97.00611°W / 33.03833; -97.00611 (33.038316, −97.006232) at an elevation of about 550 feet (170 m). It has a total area of 42.5 square miles (110 km2), of which 6.1 sq mi (16 km2) is covered by water. It lies at the southern end of Denton…

Average elevation: 160 m

Officially, the elevation of Texas City is 10 feet above sea level, though some areas are even lower. It was naturally vulnerable to flooding by hurricane storm surges and heavy rainstorms.

Average elevation: 2 m

Average elevation: 8 m

The city is located on the northeastern edge of Texas Hill Country. Portions of Georgetown are located on either side of the Balcones Escarpment, a fault line in which the areas roughly east of IH-35 are flat and characterized by having black, fertile soils of the Blackland Prairie, and the west side of the…

Average elevation: 219 m

Average elevation: 28 m

Average elevation: 727 m

Average elevation: 174 m

Average elevation: 89 m

Average elevation: 191 m

The Woodlands is in a heavily forested area, and much of the community has retained trees for shade and decoration. The terrain is essentially flat, with the exception of topographic variations ranging from 125 to 175 feet above sea level between Spring Creek and Flintridge Drive.

Average elevation: 47 m

Average elevation: 405 m

Average elevation: 218 m

Average elevation: 69 m

Soils are mostly of clay to silty clay loam texture, moderately alkaline (pH 8.2) to strongly alkaline (pH 8.5 and with a significant degree of salinity in many places; other types of soils present around the city include Cameron clay and sporadic amounts of Laredo silt loam. Due to Brownsville's proximity to…

Average elevation: 9 m

Average elevation: 150 m

Average elevation: 332 m

Average elevation: 145 m

The earthfill dam has a concrete spillway and was designed by Brown and Root, Incorporated (now KBR, Inc). The dam has a spillway crest elevation of 99 feet (30 m) above mean sea level. The average base width of the dam's earthen embankment is 310 feet (94 m) wide. The spillway is designed and constructed to…

Average elevation: 66 m

Average elevation: 855 m

Average elevation: 147 m

Average elevation: 562 m

Average elevation: 483 m

Average elevation: 18 m

The Guadalupe Mountains reach their highest point at Guadalupe Peak, the highest point in Texas, with an elevation of 8,751 feet (2,667 m). The range lies southeast of the Sacramento Mountains and east of the Brokeoff Mountains. The mountain range extends north-northwest and northeast from Guadalupe Peak in…

Average elevation: 1,484 m

Average elevation: 84 m

Average elevation: 165 m

Average elevation: 250 m

The elevation of Austin varies from 425 feet (130 m) to approximately 1,000 feet (305 m) above sea level. Due to the fact it straddles the Balcones Fault, much of the eastern part of the city is flat, with heavy clay and loam soils, whereas the western part and western suburbs consist of rolling hills on the…

Average elevation: 216 m

Average elevation: 202 m

Dallas and its surrounding area are mostly flat. The city lies at elevations ranging from 450 to 550 feet (137 to 168 m) above sea level. The western edge of the Austin Chalk Formation, a limestone escarpment (also known as the "White Rock Escarpment"), rises 230 feet (70 m) and runs roughly north–south…

Average elevation: 160 m

Average elevation: 28 m

Average elevation: 94 m

Average elevation: 99 m

Average elevation: 35 m