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The Arkansas–White–Red water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the ...
Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs.
Map of project area. The Grand Prairie Area Demonstration Project is an interbasin transfer project to provide water to eastern Arkansas for the purposes of agricultural water supply, aquifer recharge, prairie and wetland restoration, water conservation and waterfowl management.
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.)
Water in Arkansas is an important issue encompassing the conservation, protection, management, distribution and use of the water resource in the state. Arkansas contains a mixture of groundwater and surface water, with a variety of state and federal agencies responsible for the regulation of the water resource.
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 half of the state south of Little Rock is apter to see ice storms. Arkansas's record high is 120 °F (49 °C) at Ozark on August 10, 1936; the record low is −29 °F (−34 °C) at Gravette, on February 13, 1905. [16] Arkansas is known for extreme weather and frequent storms.
While Congress approved the Arkansas River Compact in 1949, [14] the compact did not stop further disputes by the two states over water rights to the river. The Kansas–Oklahoma Arkansas River Basin Compact was created in 1965 to promote mutual consideration and equity over water use in the basin shared by those states.