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Virginia's 6th Order NWBD* Units
* NWBD: National Watershed Boundary Dataset (1,251 6th order watersheds) (also referred to as 12 digit hydrologic units, for example: Ramseys Draft: 6th order code JU62 = 12 digit code 020802020102)
Major River BasinsChesapeake Bay/Atlantic Ocean and Small CoastalChowan River and Dismal SwampJames RiverNew RiverPotomac RiverRappahannock RiverRoanoke and Yadkin RiversShenandoah RiverTennessee and Big Sandy RiversYork River
0 25 50 75 10012.5Miles Sources:
Virginia Department of Environmental Quality (Water Quality Standards) Virginia Department of Conservation & Recreation (Aug 2016; vanwbd v5)«