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Mississippi Alluvial Plain

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Map Legend & Subregion List

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NameColor on MapEPA Code‡
Northern Holocene Meander Belts73a
Northern Pleistocene Valley Trains73b
St. Francis Lowlands73c
Northern Backswamps73d
Grand Prairie73e
Western Lowlands Holocene Meander Belts73f
Western Lowlands Pleistocene Valley Trains73g
Arkansas/Ouachita River Holocene Meander Belts73h
Arkansas/Ouachita River Backswamps73i
Macon Ridge73j
Southern Holocene Meander Belts73k
Southern Pleistocene Valley Trains73l
Southern Backswamps73m
Inland Swamps73n
Deltaic Coastal Marshes and Barrier Islands73o

† Status: ✓ = Complete ○ = Needs Image … = Incomplete ∅ = Stub Only

This code refers to the US EPA's Level 4 ecoregion codes for the continental U.S., see here.

Progress

Partially Complete
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With Images
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Complete w/ Images
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