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  2. It is the largest ecoregion of Louisiana, covering 12,350 square miles (32,000 km 2), and including all of the historic Mississippi River floodplain in the state. Mississippi portal; References

  3. Mississippi Alluvial Plain. The Mississippi Alluvial Plain (MAP) has become one of the most important agricultural regions in the US, and it relies heavily on a groundwater system that is poorly understood and shows signs of substantial change. The heavy use of the available groundwater resources has resulted in significant groundwater-level ...

  4. Sep 14, 2016 · Partners. The Mississippi Alluvial Plain is one of the most productive agricultural regions in the Nation and depends on groundwater for irrigation. The MAP area constitutes the third largest area of irrigated cropland in the United States. The area is approximately 29,000 square miles (19 million acres) and includes parts of the States of ...

  5. Sep 14, 2016 · Mississippi Alluvial Plain: Regional Geophysical Survey. May 7, 2021. View Web Tool. In 2017, the USGS Mississippi Alluvial Plain (MAP) Regional Water Availability Study began an airborne geophysical mapping campaign to improve understanding of the geology and structure of the Mississippi River Valley alluvial aquifer.

  6. Humid subtropical ( Cfa) The Mississippi Alluvial Plain is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in seven U.S. states, though predominantly in Arkansas, Louisiana, and Mississippi. It parallels the Mississippi River from the Midwestern United States to the Gulf of Mexico .

  7. Dec 13, 2016 · See more about the study here. The Mississippi Alluvial Plain is one of the most productive agricultural regions in the Nation and depends on groundwater for irrigation. The MAP area constitutes the third largest area of irrigated cropland in the United States. The area is approximately 29,000 square miles (19 million acres) and includes parts ...

  8. Accessibility FOIA Privacy Policies and Notices. U.S. Department of the Interior || U.S. Geological Survey. Page Contact Information: Drew Westerman, dawester@usgs ...

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