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Elevation varies from 4,000 to 5,200 feet (1,219 to 1,646 m). The fine-textured soils are poorly drained, and basins collect water seasonally. Although water levels fluctuate from year to year, lakes and wetlands in this region hold water more consistently than on the coarser, better drained soils of the Pluvial Lake Basins.
Top-down illustration of a dendritic drainage basin. The dashed line is the main water divide of the hydrography basin. Digital terrain map of the Latorița River's drainage basin in Romania. Drainage basins are important in ecology. As water flows over the ground and along rivers it can pick up nutrients, sediment, and pollutants.
The Trans-Pecos region is the only part of Texas regarded as mountainous and includes seven named peaks in elevation greater than 8,000 feet (2,400 m). This region includes sand hills, desert valleys, wooded mountain slopes and desert grasslands. [11] The vegetation diversity includes at least 268 grass species and 447 species of woody plants. [15]
Map showing worldwide drainage basins and triple divides. A triple divide or triple watershed is a point on Earth's surface where three drainage basins meet. A triple divide results from the intersection of two drainage divides.
Most lakes are not actually endorheic, but endorheic basins may not have standing water, or have water only seasonally. The most significant endorheic basins are these: Great Basin covering most of Nevada, the western part of Utah, and smaller amounts of other U.S. states; Great Divide Basin on the Continental Divide in Wyoming; Guzmán Basin
The other definitions yield not only different geographical boundaries of "Great Basin" regions but regional borders that vary from source to source. [ 4 ] : 11 The Great Basin Desert is defined by plant and animal communities, and, according to the National Park Service , its boundaries approximate the hydrographic Great Basin but exclude the ...
The Northern Rocky Mountain Intermontane Basins aquifer system is composed largely of unconsolidated sand lying under western Montana, Idaho and a small part of Washington. [2] These shallow aquifers are not connected as a whole, body of water, but narrow glacial deposits unified by a common geologic history.
The Basin and Range Province is a vast physiographic region covering much of the inland Western United States and northwestern Mexico. It is defined by unique basin and range topography , characterized by abrupt changes in elevation, alternating between narrow faulted mountain chains and flat arid valleys or basins.