The Occoquan Reservoir is a large body of water located in northern Virginia, primarily serving as a water supply for the surrounding communities. It was created by damming the Occoquan River and is part of the Occoquan Watershed, which plays a crucial role in local ecology and water management. The reservoir covers approximately 2,100 acres and features various recreational activities, including fishing, boating, and hiking. It is surrounded by parks and natural areas, making it a popular destination for outdoor enthusiasts. The Occoquan Reservoir also supports diverse wildlife, contributing to the region's biodiversity.