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The Arkansas Geological Survey (AGS), formerly the Arkansas Geological Commission (AGC), is a government agency of the State of Arkansas. It is responsible for the investigation of the geology, geologic processes, and geologic resources within the state. It encourages the considered management and utilization of the state's mineral, fossil-fuel ...
Website. www .usgs .gov. The United States Geological Survey ( USGS ), founded as the Geological Survey, is an agency of the United States government whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the ...
The list given below has been only slightly modified since it was first produced by the U.S. Geological Survey (USGS) in the early 1920s. At that time, the center for a state was found by suspending a cardboard cutout of the state by a string, and then drawing a vertical line from the suspension point.
Hydrologic unit system (United States) For the use of hydrologists, ecologists, and water-resource managers in the study of surface water flows in the United States, the United States Geological Survey created a hierarchical system of hydrologic units. Originally a four-tier system divided into regions, sub-regions, accounting units, and ...
Intercontinental organizations. Anthropocene Working Group. Association for Women Geoscientists ( AWG) Association of Applied Geochemists. Environmental and Engineering Geophysical Society. Geochemical Society. International Association for Engineering Geology and the Environment. International Association for Mathematical Geosciences ( IAMG)
Six of seven streamgages along the Arkansas River surveyed by the United States Geological Survey (USGS) in Arkansas recorded their highest streamflows on record. The flooding was considered a 1 in 200 year event near Van Buren, Arkansas , where the river reached a peak streamflow of 570,000 cu ft/s (16,000 m 3 /s).
The majority of these springs have been measured less than 10 times, at random intervals. The exceptions are Big Spring, Greer Spring, Mammoth Spring, Bennett Spring, Maramec Spring, Alley Spring, and Round Spring, which have all been measured for more than 3 years on a daily basis by the United States Geological Survey (USGS).
Today, the United States Geological Survey Library's users have access to over 1.7 million items: over 980,000 books and journals, over 600,000 maps, over 8,000 electronic media items (DVDs, CDs), and subscribes to over 113,000 electronic journal titles and eBooks. Materials include USGS publications, as well as those produced by state and ...