The Rockfish River is a tributary of the James River in central Virginia in the United States. Via the James River, it is part of the watershed of the Chesapeake Bay. Course The Rockfish River is formed in Nelson County, Virginia, by the confluence of its North and South Forks (), both of which rise in the Blue Ridge Mountains near the Blue Ridge Parkway. It flows generally southeastwardly through northern Nelson County; in its lower course the river is used to define the boundary between Nelson and Albemarle counties. It enters the James River from the northwest on the common boundary of the two counties, about southwest of Scottsville. Etymology Rockfish Valley is named for the fact that before the dams on the James River were constructed, rockfish ran from the bays as far west as the valley. See also List of Virginia rivers Sources Columbia Gazetteer of North America entry DeLorme (2005). Virginia Atlas & Gazetteer. Yarmouth, Maine: DeLorme. . Rivers of Virginia Tributaries of the James River Rivers of Albemarle County, Virginia Rivers of Nelson County, Virginia