11,000 BC - Today

Continued warming trend
Delaware and Chesapeake Bays form
Shellfish communities form in the Bays
Early Native American Settlements


The Delaware Bay | 3000 BC-900 BC

3000 BC

Start of the so-called Woodland Period. The rising sea began to drown the ancient Delaware and Susquehanna river valleys, gradually transforming them into the Delaware and Chesapeake Bays.

1200 BC

The rate of which the sea rose slowed enough to allow development of estuarine shellfish communities. Stone cooking bowls and rudimentary ceramics appear in the archaeological record for the first time. The advent of cooking and more permanent villages of these early people would only be possible if there was a reliable source of food.