- Supawna Meadows NWR lies along the Delaware River, north of the Salem River in Salem County, NJ. Approximately 75 percent of the current acreage is brackish tidal marsh. The refuge provides wintering and migrating waterfowl with an important feeding and resting area.
A wide variety of waterfowl use the refuge during fall and spring migrations. Black ducks, mallards and northern pintails are common winter visitors. Herons, egrets and sandpipers use the marsh as a feeding area during the summer as well as spring and fall migration. Delaware's nearby Pea Patch Island Rookery hosts over 6,000 pairs of herons and egrets.