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The Ogallala Aquifer (oh-gə-LAH-lə) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States. As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi (450,000 km 2) in portions of eight states (South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas). [1]
The National Research Council study, funded indirectly by a $1.4 million grant from Virginia Uranium to the Commonwealth, resulted in a report released in December 2011. [96] The report identified a range of health and environmental issues and related risks that could result from uranium mining in the Commonwealth of Virginia.
The Atlantic Seaboard Fall Line, or Fall Zone, is a 900-mile (1,400 km) escarpment where the Piedmont and Atlantic coastal plain meet in the eastern United States. [ 2] Much of the Atlantic Seaboard fall line passes through areas where no evidence of faulting is present. The fall line marks the geologic boundary of hard metamorphosed terrain ...
The map shows dams and reservoirs built in the Pick–Sloan Program since the 1940s. Virginia Smith Dam (also known as Calamus Dam; National ID # NE02287) is a dam in Garfield County, Nebraska, about five miles northwest of Burwell . The earthen dam was constructed in 1985 by the United States Bureau of Reclamation with a height of 96 feet (29 ...
Following is a list of dams and reservoirs in Nebraska.. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
Rainwater Basin Wetland Management District. The Rainwater Basin wetland region is a 4,200 sq mi (11,000 km 2) loess plain located south of the Platte River in south-central Nebraska. [1] It lies principally in Adams, Butler, Clay, Fillmore, Hamilton, Kearney, Phelps, Polk, Saline, Seward, and York counties and extends into adjacent areas of ...
A map released Tuesday in the journal Nature offers the first comprehensive map of the world’s underground water sources and the ecosystems that depend on them. In…
e. Virginia counties and cities by year of establishment. The Commonwealth of Virginia is divided into 95 counties, along with 38 independent cities that are considered county-equivalents for census purposes, totaling 133 second-level subdivisions. In Virginia, cities are co-equal levels of government to counties, but towns are part of counties.