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The following is a list of dams and reservoirs in Arkansas. 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 ).
The Arkansas Valley is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in the U.S. states of Arkansas and Oklahoma.It parallels the Arkansas River between the flat plains of western Oklahoma and the Arkansas Delta, dividing the Ozarks and the Ouachita Mountains with the broad valleys created by the river's floodplain, occasionally interrupted by low hills ...
The level III ecoregions in Arkansas are the South Central Plains (35), Ouachita Mountains (36), Arkansas Valley (37), Boston Mountains (38), Ozark Highlands (39), Mississippi Alluvial Plain (73), Mississippi Valley Loess Plains (74). (Compare to map of Level IV ecoregions.)
QAPF diagram with basalt/andesite field highlighted in yellow. Andesite is distinguished from basalt by SiO 2 > 52%. Andesite is field O2 in the TAS classification.. Andesite is an aphanitic (fine-grained) to porphyritic (coarse-grained) igneous rock that is intermediate in its content of silica and low in alkali metals.
Blue Mountain Lake is a reservoir in Arkansas, United States. A U.S. Army Corps of Engineers Lake on the Petit Jean River in west central Arkansas, Blue Mountain Lake has approximately 50 miles of shoreline, located between Mount Magazine and the Ouachita Mountains just west of Havana, Arkansas.
The following list contains lists of lakes and reservoirs in Arkansas by county. Swimming, fishing, and/or boating are permitted in some of Arkansas’s lakes, but not all. A lake is a terrain feature (or physical feature ), a body of liquid on the surface of a world that is localized to the bottom of basin (another type of landform or terrain ...
near Vicksburg, Mississippi: Arkansas River: ... Source for all rivers except St. Francis is the "USGS Water-Data ... USGS Hydrologic Unit Map – State of Arkansas ...
The Arkansas River Valley, also known as the Arkansas Valley, is a region in Arkansas defined by the Arkansas River in the western part of the state. Generally defined as the area between the Ozark and Ouachita Mountains, [1] the River Valley is characterized by flat lowlands covered in fertile farmland and lakes periodically interrupted by high peaks.