Flag Ponds Nature Park Beach

Flag Ponds Nature Park Beach is a secluded Chesapeake Bay beach within a 327-acre nature preserve managed by Calvert County in southern Maryland, approximately 50 miles south of Annapolis near Lusby. The beach stretches roughly half a mile at the base of the Calvert Cliffs, the same fossil-bearing formation that lines much of the western Chesapeake Bay shoreline in Calvert County. The sand is coarse and mixed with shell grit; bay water here is calm, warm, and moderately turbid — shallow enough for wading and gentle swimming near shore. A short forested trail from the parking area descends through mature hardwoods to emerge onto the shoreline. The park's name comes from the blue flag iris that blooms prolifically around the freshwater ponds behind the beach in spring, providing a scenic trail environment even in the quieter months. The cliffs behind the beach rise up to 100 feet in places — visually dramatic and actively eroding into the bay, releasing 12-to-20-million-year-old Miocene fossils onto the shoreline. Shark teeth, whale bone fragments, and shell fossils are regularly found here, making fossil hunting the park's signature activity alongside birdwatching. Osprey nesting platforms are visible throughout the wetland area. Hiking trails connect to the freshwater ponds and through the forest interior. A fishing pier extends into the bay. The park charges a $6 per person admission fee (reduced for Calvert County residents) and closes from December through March. No lifeguard is stationed at the beach. Facilities include picnic tables, restrooms, and a parking area at the trailhead. No food concessions are available inside the park.