Geography of Atascosa County, Texas

Atascosa County, situated in South Texas, boasts a diverse geography characterized by rolling prairies, fertile farmland, and winding rivers. This area is renowned for its rich agricultural heritage, abundant wildlife, and unique natural features. In this detailed exploration, we’ll delve into the geography, climate, rivers, lakes, and other notable features of Atascosa County.


According to Neovideogames, Atascosa County is located in the southwestern part of Texas, covering an area of approximately 1,236 square miles (3,202 square kilometers). It is part of the South Texas Plains region, characterized by gently rolling terrain and expansive grasslands. The county’s landscape is primarily rural, with vast stretches of farmland interspersed with pockets of brushland and woodland.

The county seat, Jourdanton, serves as the central hub of Atascosa County, surrounded by smaller communities and rural settlements. The terrain gradually slopes downward from the northern part of the county to the south, where it meets the coastal plains and marshes near the Gulf of Mexico.


Atascosa County experiences a semi-arid climate, typical of the South Texas region. Summers are hot and humid, with average temperatures often exceeding 90 degrees Fahrenheit (32 degrees Celsius). Heatwaves are common during the summer months, with temperatures occasionally reaching well over 100 degrees Fahrenheit (38 degrees Celsius).

Winters are mild, with average temperatures ranging from the upper 40s to low 60s Fahrenheit (around 9 to 17 degrees Celsius). Frost is rare but can occur during particularly cold spells. The region receives most of its rainfall during the late spring and early fall, with the summer months being relatively dry.

Annual precipitation averages around 26 inches (660 millimeters), with variability from year to year. Droughts are not uncommon in Atascosa County, posing challenges for agriculture and water resources.

Rivers and Lakes:

Atascosa County is crisscrossed by several rivers and creeks, which play a vital role in the region’s ecology, agriculture, and recreational opportunities.

The Atascosa River, after which the county is named, flows through the northern part of the county, providing water for irrigation and livestock and serving as a habitat for wildlife. The river’s name, derived from Spanish, translates to “boggy” or “swampy,” reflecting the wetlands and marshes that characterize its lower reaches.

Another significant waterway in Atascosa County is the Medina River, which meanders through the eastern part of the county. The Medina River is known for its clear waters, scenic beauty, and recreational opportunities, including kayaking, fishing, and birdwatching.

In addition to rivers, Atascosa County is home to several smaller creeks and streams, such as Cibolo Creek, Hondo Creek, and San Miguel Creek, which provide habitat for various species of fish and wildlife.

While Atascosa County does not have any natural lakes of significant size, it does feature several reservoirs and stock tanks, which serve as important water sources for agriculture and livestock. These artificial lakes also provide opportunities for fishing and boating for local residents and visitors.

Vegetation and Wildlife:

Atascosa County’s diverse geography supports a variety of vegetation types, including grasslands, woodlands, and riparian areas. The county’s prairies are dominated by grasses such as buffalo grass, bluestem, and grama grass, which provide forage for livestock and habitat for wildlife.

In the wooded areas of Atascosa County, you can find oak, mesquite, cedar, and huisache trees, among others. These woodlands provide cover and food for a wide range of wildlife species, including white-tailed deer, javelina, bobcats, and various species of birds and small mammals.

The county’s rivers, creeks, and reservoirs support a rich aquatic ecosystem, with fish such as bass, catfish, and sunfish being common. Wetland areas along the rivers provide habitat for waterfowl, wading birds, and other water-loving species.


In conclusion, Atascosa County, Texas, offers a fascinating blend of natural beauty, agricultural productivity, and outdoor recreational opportunities. From its rolling prairies and winding rivers to its diverse wildlife and lush vegetation, the county’s geography reflects the unique character of the South Texas region. Whether exploring the scenic Medina River, fishing in one of the county’s stock tanks, or simply enjoying the vast expanse of the Texas countryside, Atascosa County has much to offer for residents and visitors alike.