According to Doug Levin, director of the Earth Mapping Laboratory at the University of Maryland Eastern Shore, Pocomoke River is the deepest river in the United States. It is second deepest river in the world, next to the Nile in Africa.
The Pocomoke River ranges in depth from 7 to 45 feet and has a total length of 73 miles. Originating in the Great Cypress Swamp on the Maryland-Delaware border, the Pocomoke flows 55 miles through Maryland before it empties into Pocomoke Sound at the Chesapeake Bay.
The Pocomoke River is a tea-colored waterway. This is characteristic of cypress swamps. The coloring comes from the tannic acid in the roots and decaying leaves of trees and plants that line the banks.