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Gillis Springs
Gillis Springs, formerly Willow Spring, is a historical Spring (hydrology), spring, two miles, (3 km) northwest of California Spring in Val Verde County, Texas. Willow Spring was 16.39 miles, (26 km), south of Fort Hudson and the second crossing of the Devils River (Texas), Devils River on the San Antonio-El Paso Road. It was the last water for travelers from the east on the road before Dead Mans Pass.Gunnar M. Brune, Springs of Texas, Volume 1, Texas A&M University Press, 2002, p.455 Book, ca. 1859; digital images, (http://texashistory.unt.edu/ark:/67531/metapth123765/ accessed November 12, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Texas State Historical Association, Denton, Texas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring (hydrology)
A spring is a point of exit at which groundwater from an aquifer flows out on top of Earth's crust (pedosphere) and becomes surface water. It is a component of the hydrosphere. 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 hydrostatic pressure. Their yield 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 groundwater table reaches above the surface level. Springs may also be formed as a result of karst topography, aquifers, or volcanic activity. Springs also have been observed on the ocean floor, spewing hot water directly into the ocean. Springs formed as a result of karst topography create karst springs, in which ground water travels through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
