Great Marsh Preserve

Wildlife Site

The Great Marsh Preserve, stretching over 17,000 acres between the City of Lewes and Slaughter Beach, Delaware, is one of the state’s few remaining wetlands, brimming with a variety of unique local fauna and wildlife. Towering pines and oaks, fields of tulip poplar, long grasses--all set the stage for sightings of red-wing blackbirds, wading birds, hawks, falcons, and more that arrive here for their summertime migration. Additionally, the vast salt marsh was once a vital resource used by locals for farming, shipbuilding, fishing, haying, roofing, insulation, livestock feed, and even artistic works.

Delaware River Guide

Interactive Maps

Upper Delaware

Middle Delaware

Easton to Trenton

NEW! Lower Delaware

Thematic Maps

Boat Ramps

Bridges and Ferries

River Gages

Search Delaware Sites

Also Explore

Great Marsh Preserve

Wildlife Site

Suggested Links