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2. Arkansas Geological Survey - Wikipedia

   en.wikipedia.org/wiki/Arkansas_Geological_Survey

   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 ...

3. United States Geological Survey - Wikipedia

   en.wikipedia.org/.../United_States_Geological_Survey

   United States Geological Survey (USGS) / 38.9470; -77.3675. 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 ...

4. Hydrologic unit system (United States) - Wikipedia

   en.wikipedia.org/wiki/Hydrologic_unit_system...

   This map of United States water resource subregion hydrologic units updated boundaries to include the ocean as well as the portions of the basins that cross international borders 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 ...

5. Quadrangle (geography) - Wikipedia

   en.wikipedia.org/wiki/Quadrangle_(geography)

   A " quadrangle " is a topographic map produced by the United States Geological Survey (USGS) covering the United States. The maps are usually named after local physiographic features. The shorthand " quad " is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad". A quadrangle is defined by north and south ...

6. United States Geological Survey Library - Wikipedia

   en.wikipedia.org/wiki/United_States_Geological...

   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 ...

7. The National Map - Wikipedia

   en.wikipedia.org/wiki/The_National_Map

   The National Map is a collaborative effort of the United States Geological Survey (USGS) and other federal, state, and local agencies to improve and deliver topographic information for the United States. [1] The purpose of the effort is to provide "...a seamless, continuously maintained set of public domain geographic base information that will ...

8. Pinnacle Mountain (Arkansas) - Wikipedia

   en.wikipedia.org/wiki/Pinnacle_Mountain_(Arkansas)

   USGS Pinnacle Mountain. Pinnacle Mountain is a 1,011-foot (308 m) summit and the second-highest natural point in Pulaski County, Arkansas, United States; it is also the primary attraction of the 2,356-acre (953 ha) Pinnacle Mountain State Park. [2] Located in the foothills of the Ouachita Mountains approximately 13 miles (21 km) northwest of ...

9. Mount Magazine - Wikipedia

   en.wikipedia.org/wiki/Mount_Magazine

   Mount Magazine, officially named Magazine Mountain, is the highest point of the U.S. Interior Highlands and the U.S. state of Arkansas, and is the site of Mount Magazine State Park. [3] It is a flat-topped mountain or mesa capped by hard rock and rimmed by precipitous cliffs. There are two summits atop the mountain: Signal Hill, which reaches ...