Hart-Miller Island is a 1,100-acre island located in Baltimore County on the Chesapeake Bay near the mouth of Middle River and is a must see for those who want to get away from it all. The island was originally part of a peninsula that extended from Edgemere, Maryland. The two islands, Hart and Miller were joined by the construction of a dike in 1981, and until 2009, the impoundment was filled with dredge material from Baltimore Harbor, eventually creating Hart-Miller island. In recent years, Hart-Miller Island has become a haven for boaters in the northern Chesapeake Bay, providing the public opportunities to encounter many different species of plants, insects and wildlife along with other fun recreational activities.

The western shore of the island offers safe mooring, wading and access to a 3,000-foot sandy beach. Hart-Miller Island State Park also includes Hawk Cove and Pleasure Island, which also provide recreational opportunities and camping. The park is well-known for its abundant migrating bird populations.

​Trails

The south cell contains over eight miles of trails that circle around a large, beautiful pond and include breathtaking views of the Chesapeake Bay. The south cell may be closed due to inclimate weather. Follow the Gunpowder Falls Twitter account for closure messages due to weather.

Long Trail Loop (1.8 miles): Interpretive signage details the various wildlife and different ecosystems that are a part of Hart-Miller Island as well as the history on this unique, one of a kind area.

Day-Use

Hart-Miller Island, Hawk Cove and Pleasure Island are open year-round with opportunities to hike, picnic, fish, swim, bike and bird-watch.

More than half-a-mile of sandy beach invites swimming, beach-combing and sunbathing.

Water supply and restrooms (open May through September) are available at the main camping area on Hart-Miller Island.

An observation platform (open May through September) provides great views of the marsh.

Bicycle rentals are available on the south cell.

Binoculars and bird guides are available to borrow.

Light concessions include sodas and snacks.

At the close of the day, the island is closed to everyone except registered campers.

Camping

Camping is available from May 1-September 30.

Hart-Miller Island State Park offers 22 campsites available on a first-come, first-serve basis:

6 sites in the main camping area on Hart-Miller Island
11 sites at Hawk Cove
5 sites on Pleasure Island

All sites have a picnic table, lantern post and campfire grill.
Campfires may only be built in the fire rings provided.