The primary purposes of Great Vly Wildlife Management Area (WMA) are for wildlife management, wildlife habitat management, and wildlife-dependent recreation.
This WMA consists of 184 acres, most of which are freshwater wetland. There are about 7 acres of mature forested upland and early successional forest at the southwest corner of the property.
The first portion of the WMA was acquired in 1986 from Scenic Hudson. The WMA can be accessed from West Camp Road. Great Vly consists primarily of freshwater emergent marsh. Because of its proximity
to the Hudson River, it is an important area for waterfowl and other water-dependent birds such as rails and herons, especially during migration. The property also includes a limited amount of forested
upland, including a rocky ridge that overlooks the Vly and provides excellent viewing opportunities.