Park landscape, Arkansas Post National Memorial, 2014.

Located at the northern edge of the Gulf coastal plain, the Arkansas Post's native growth ranges from prairie grasses and lowland hardwood forests to wetland marshes near the bayous and river. Over the three centuries of history at Arkansas Post, the area has been greatly changed by both natural forces and human intervention. Flooding, erosion and a natural change in the river's course have altered the site of the historic town and forts, as have attempts to improve navigation and control of the river with dams and levees.