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The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.
Nebraska – Thirty eastern counties from the Missouri River to about the 98 latitude or about 100 miles (160 km) of the state. [ 3 ] South Dakota – An L-shaped section along the Sioux River from north of Sioux Falls down to its junction with the Missouri River and then west up the Missouri for about 100 miles (160 km).
The Upper Midwest is a northern subregion of the U.S. Census Bureau's Midwestern United States.Although the exact boundaries are not uniformly agreed upon, the region is usually defined to include the states of Iowa, Michigan, Minnesota and Wisconsin; some definitions include North Dakota, South Dakota, and parts of Nebraska and Illinois.
The former Sioux Ordnance Depot in Cheyenne County was the site of 70% of federal oil production from the Derrick, Table and Ehmke fields. [6] Of the 2,817 active oil and gas wells in the state on January 1, 2016, the Nebraska Oil and Gas Conservation Commission found that only two used hydraulic fracturing .
The falls of the Big Sioux River in Falls Park, Sioux Falls, frozen over in winter. South Dakota has a continental climate, semi-arid in the west outside of the Black Hills, with four distinct seasons, ranging from very cold winters to hot summers. During the summers, the average high temperature throughout the state is often close to 90 °F or ...
The Sioux quartzite was likely the only point of high topography, rising above a flat plain which was invaded with seawater. The Deadwood Formation formed during this period, exposed as a 400-foot thick unit in the walls of the Spearfish Canyon, ranging to 50 feet thick by Wind Cave. Cambrian rocks are only exposed in the Black Hills and ...
Structures of Kansas showing the Nemaha Uplift/Ridge. The Nemaha Ridge (also called the Nemaha Uplift and the Nemaha Anticline [1]) is located in the Central United States.It is a buried structural zone associated with a granite high in the Pre-Cambrian basement that extends from approximately Omaha, Nebraska to Oklahoma City, Oklahoma.
The Oglala National Grassland is a United States National Grassland in the northwest corner of Nebraska. It is in northern Sioux and northwestern Dawes counties, on the borders with South Dakota and Wyoming. It is 94,520 acres (38,250 ha) in size and is one of the small handful of National Grasslands administered by the US Department of ...