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Texas Hill Country
The Texas Hill Country is a geographic region of Central and South Texas, forming the southeast part of the Edwards Plateau. Given its location, climate, terrain, and vegetation, the Hill Country can be considered the border between the American South and Southwest. The region represents the very remote rural countryside of Central Texas, but also is home to growing suburban neighborhoods and affluent retirement developments. The region is notable for its karst topography and tall rugged hills of limestone or granite. Many of the hills rise to a height of above the surrounding plains and valleys, with Packsaddle Mountain rising to a height of above the Llano River in Kingsland. The Hill Country also includes the Llano Uplift and the second-largest granite dome in the United States, Enchanted Rock. The terrain throughout the region is characterized by a thin layer of topsoil and many exposed rocks and boulders, making the region very dry and prone to flash flooding. N ...
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Region
In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and the environment (environmental geography). Geographic regions and sub-regions are mostly described by their imprecisely defined, and sometimes transitory boundaries, except in human geography, where Jurisdiction (area), jurisdiction areas such as national borders are defined in law. More confined or well bounded portions are called ''locations'' or ''places''. Apart from the Earth, global continental regions, there are also hydrosphere, hydrospheric and atmosphere, atmospheric regions that cover the oceans, and discrete climates above the land mass, land and water mass, water masses of the planet. The land and water global regions are divided into subregions geographically bounded by large geological feature ...
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Flash Flood
A flash flood is a rapid flooding of low-lying areas: washes, rivers, dry lakes and depressions. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, or tropical storm, or by meltwater from ice and snow. Flash floods may also occur after the collapse of a natural ice or debris dam, or a human structure such as a man-made dam, as occurred before the Johnstown Flood of 1889. Flash floods are distinguished from regular floods by having a timescale of fewer than six hours between rainfall and the onset of flooding. Flash floods are a significant hazard, causing more fatalities in the U.S. in an average year than lightning, tornadoes, or hurricanes. They can also deposit large quantities of sediments on floodplains and destroy vegetation cover not adapted to frequent flood conditions. Causes Flash floods most often occur in dry areas that have recently received precipitation, but they may be seen anywhere downstream from the source of the prec ...
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San Marcos, Texas
San Marcos () is a city and the county seat of Hays County, Texas, United States. The city is a part of the Greater Austin, Greater Austin Metropolitan Area. San Marcos's limits extend into Caldwell County, Texas, Caldwell and Guadalupe County, Texas, Guadalupe County (United States), counties, as well. San Marcos is on the Interstate 35 in Texas, Interstate 35 corridor between Austin, Texas, Austin and San Antonio. Its population was 44,894 at the 2010 United States Census, 2010 census and 67,553 at the 2020 United States census, 2020 census. Founded on the banks of the San Marcos River, the area is thought to be among the oldest continuously inhabited sites in the Americas. San Marcos is home to Texas State University and the Meadows Center for Water and the Environment."Meadows Center for Water ...
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Edwards Aquifer
The Edwards Aquifer is one of the most prolific artesian aquifers in the world. Located on the eastern edge of the Edwards Plateau in the U.S. state of Texas, it is the source of drinking water for two million people, and is the primary water supply for agriculture and industry in the aquifer's region. Additionally, the Edwards Aquifer feeds the Comal River, Comal and San Marcos Springs, provides springflow for recreational and downstream uses in the Nueces River, Nueces, San Antonio River, San Antonio, Guadalupe River (Texas), Guadalupe, and San Marcos River, San Marcos river basins, and is home to several unique and endangered species. Basin characteristics Geography Located in South Central Texas, the Edwards Aquifer encompasses an area of approximately that extends into parts of 11 counties. The aquifer's boundaries begin at the groundwater divide in Kinney County, East of Brackettville, and extend Eastward through the San Antonio area and then Northeast where the aquif ...
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Spring (hydrosphere)
A spring is a natural exit point at which groundwater emerges from an aquifer and flows across the ground surface as surface water. It is a component of the hydrosphere, as well as a part of the water cycle. Springs have long been important for humans as a source of fresh water, especially in arid regions which have relatively little annual rainfall. Springs are driven out onto the surface by various natural forces, such as gravity and Hydrostatics#Hydrostatic pressure, hydrostatic pressure. A spring produced by the emergence of Geothermal activity, geothermally heated groundwater is known as a hot spring. The yield (hydrology), yield of spring water varies widely from a volumetric flow rate of nearly zero to more than for the biggest springs. Formation Springs are formed when groundwater flows onto the surface. This typically happens when the water table reaches above the surface level, or if the terrain depression (geology), depresses sharply. Springs may also be formed ...
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Lago Vista, Texas
Lago Vista, Texas ("Lake View" in English) is a lakeside community located on the northern shores of Lake Travis. The city is located within Travis County, Texas, United States, and is less than 20 miles from downtown Austin. Much of Lago Vista is located on a peninsula that extends across 15.52 square miles of Texas Hill Country. The Colorado River runs adjacent to the city. Travis County experienced a population increase of 26.9% between 2010 and 2020, while Lago Vista grew by 47.3% during the decade. Geography Lago Vista is on the North Shore of Lake Travis, just under northwest of downtown Austin. According to the United States Census Bureau, the city has a total area of of which is land and (3.95%) is water. The peninsular city sits adjacent to, and partially within, the Balcones Canyonlands. Lago Vista has rugged terrain with elevations ranging from 774 ft (236 m) above sea level at the lake shore to 1220 ft (372 m) above sea level near Rusty Allen Airport ...
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Austin, Texas
Austin ( ) is the List of capitals in the United States, capital city of the U.S. state of Texas. It is the county seat and most populous city of Travis County, Texas, Travis County, with portions extending into Hays County, Texas, Hays and Williamson County, Texas, Williamson counties. Incorporated on December 27, 1839, it is the Metropolitan statistical area, 26th-largest metropolitan area in the United States, the List of United States cities by population, 13th-most populous city in the United States, the List of cities in Texas by population, fifth-most populous city in the state after Houston, San Antonio, Dallas, and Fort Worth, and the second-most populous state capital city after Phoenix, Arizona. It has been one of the fastest growing large cities in the United States since 2010. Downtown Austin and Downtown San Antonio are approximately apart, and both fall along the Interstate 35 in Texas, I-35 corridor. This combined metropolitan region of San Antonio–Austin met ...
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Travis County, Texas
Travis County is located in Central Texas. As of the 2020 United States census, 2020 census, the population was 1,290,188. It is the List of counties in Texas, fifth-most populous county in Texas. Its county seat and most populous city is Austin, Texas, Austin, the state's capital. The county was established in 1840 and is named in honor of William Barret Travis, the commander of the Republic of Texas forces at the Battle of the Alamo. Travis County is part of the Austin–Round Rock, Texas, Round Rock–Georgetown, Texas, Georgetown Greater Austin, Metropolitan Statistical Area. It is located along the Balcones Fault, the boundary between the Edwards Plateau to the west and the Blackland Prairie to the east. History Indigenous and Spanish periods Evidence of habitation of the Balcones Escarpment region of Texas can be traced to at least 11,000 years ago. Two of the oldest Paleolithic archeological sites in Texas, the Levi Rock Shelter and Smith Rock Shelter, are in southwest ...
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San Antonio
San Antonio ( ; Spanish for " Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio. San Antonio is the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the United States at 2.6 million people in the 2020 United States census. It is the most populous city in and the county seat of Bexar County. San Antonio is the seventh-most populous city in the United States, and the second-most populous in the Southern United States and Texas, after Houston. Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018. Straddling the regional divide between South and Central Texas, San Antonio anchors the southwe ...
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Balcones Fault
The Balcones Fault or Balcones Fault Zone is an area of largely normal faulting Edwards Aquifer in the U.S. state of Texas that runs roughly from the southwest part of the state near Del Rio to the north-central region near Dallas along Interstate 35. The Balcones Fault zone is made up of many smaller features, including normal faults, grabens, and horsts. One of the obvious features is the Mount Bonnell Fault. The location of the fault zone may be related to the Ouachita Mountains, formed 300 million years ago during a continental collision. Although long since worn away in Texas, the roots of these ancient mountains still exist, buried beneath thousands of feet of sediment. These buried Ouachita Mountains J.S. Aber may still be an area of weakness that becomes a preferred site for faulting when stress exists in the Earth's crust. The Balcones Fault has remained inactive for nearly 15 million years, with the last activity being during the Neogene period. This activity ...
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Quercus Fusiformis
''Quercus fusiformis'' (also often referred to as ''Q. virginiana'' var. ''fusiformis''), commonly known as escarpment live oak, plateau live oak, plateau oak, or Texas live oak, is an evergreen or nearly evergreen tree. Its native range includes the Quartz Mountains and Wichita Mountains in southwestern Oklahoma, through Texas, to the Mexican states of Coahuila, Tamaulipas, and Nuevo León. ''Quercus fusiformis'' is an evergreen tree in the southern live oaks section of the genus ''Quercus'' ( section ''Virentes''). It is distinguished from ''Quercus virginiana'' (southern live oak) most easily by the acorn The acorn is the nut (fruit), nut of the oaks and their close relatives (genera ''Quercus'', ''Notholithocarpus'' and ''Lithocarpus'', in the family Fagaceae). It usually contains a seedling surrounded by two cotyledons (seedling leaves), en ...s, which are slightly larger and with a more pointed apex. It is also a smaller tree, not exceeding in trunk diameterco ...
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Juniperus Ashei
''Juniperus ashei'' (Ashe juniper, mountain cedar, blueberry juniper, post cedar, or just cedar) is a drought-tolerant evergreen tree, native from northeastern Mexico and the south-central United States to southern Missouri. The largest areas are in central Texas, where extensive stands occur. Ashe juniper grows up to tall, and over time can reach , and provides erosion control and year-round shade for wildlife and livestock. Description The feathery foliage grows in dense sprays, bright green in color. The leaves are scale-like, long, and produced on rounded (not flattened) shoots. It is a dioecious species, with separate male and female plants. The seed conifer cone, cones are round, long, and soft, pulpy and Berry (botany), berry-like, green at first, maturing purple about 8 months after pollination. They contain one or two seeds, which are dispersed when birds eat the cones and pass the seeds in their droppings. The male cones are 3–5 mm long, yellow, turning brown a ...
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