The Delaware Estuary has sustained a human population for thousands of years, but by the end of the 19th Century, increased population and industrialization had transformed much of the upper Estuary watershed. (Jim Gerlach)

The Delaware Estuary has sustained a human population for thousands of years, but by the end of the 19th Century, increased population and industrialization had transformed much of the upper Estuary watershed.

Jim Gerlach

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century delaware end estuary human population upper watershed years industrialization

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