The Middle Patuxent Environmental Area (MPEA) is a 1,021 acres wildlife area in Clarksville. It is located next to the River Hill village in the town of Columbia, Maryland, in the United States.
The MPEA was created in 1996 for educational, research, and recreational purposes. It is home to over 40 species of mammals, and numerous amphibians, reptiles, fishes, butterflies, plants and other wildlife. The MPEA has 5.4 miles of hiking trails including the 2.4 mile Wildlife Loop Trail and the 2.3 mile South Wind Trail. Both trails pass along the Middle Patuxent River.