What the three major regional watershed systems in Virginia?

* Chesapeake Bay watershed: This watershed encompasses the entire Chesapeake Bay and its tributaries. It is the largest watershed in Virginia, covering an area of over 64,000 square miles. The Chesapeake Bay watershed is home to a variety of habitats, including forests, wetlands, and marine ecosystems.

* Roanoke River watershed: This watershed encompasses the Roanoke River and its tributaries. It is the largest river basin in Virginia, covering an area of over 15,000 square miles. The Roanoke River watershed is home to a variety of habitats, including forests, mountains, and piedmont.

* James River watershed: This watershed encompasses the James River and its tributaries. It is the second largest river basin in Virginia, covering an area of over 10,000 square miles. The James River watershed is home to a variety of habitats, including forests, wetlands, and marine ecosystems.