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Delmarva Uplands

Ecoregion in Atlantic Coastal Plain in VA, MD, DE

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The Delmarva Uplands ecoregion encompasses the nearly level to gently rolling, uplands of the Delmarva Peninsula. It includes sandy ridges, swales, low paleodunes, and the central ridge of the peninsula. Marshes and swamps are far less extensive than in ecoregions 63a, 63b, and 63d but, nevertheless, do occur and include the Great Cypress Swamp of southern Delaware. Elevations range from about 20 to less than 100 feet (6-30 m) and local relief is less than 50 feet (15m); maximum elevations and local relief are greater than in the neighboring Delaware River Terraces and Uplands (63a), the Chesapeake-Albemarle Silty Lowlands and Tidal Marshes (63b), and the Barrier Islands - Coastal Marshes (63d). Many wet, shallow elliptical depressions (i.e. Carolina Bays or Delmarva Bays) occur and have high, droughty, sandy rims (Pettry and others, 1979; Prouty, 1952); they are conspicuously absent from the Barrier Islands-Coastal Marshes (63d) and the Delaware River Terraces and Uplands (63a). Flat interfluves occur on the central ridge and are often poorly drained.

— EPA

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