8-Digit USGS US Water-Resources Cataloging Units (WRCU) Database -- Maryland

02040205 Brandywine-Christina 02050306 Lower Susquehanna 02060001 Upper Chesapeake Bay 02060002 Upper Chesapeake Bay 02060003 Gunpowder-Patapsco 02060004 Severn 02060005 Choptank 02060006 Patuxent 02060007 Blackwater-Wicomico 02060008 Nanticoke 02060009 Pocomoke 02060010 Chincoteague 02070002 North Branch Potomac 02070003 Cacapon-Town 02070004 Conococheague-Opequon 02070008 Middle Potomac-Catoctin 02070009 Monocacy 02070010 Middle Potomac-Anacostia-Occoquan 02070011 Lower Potomac 05020006 Youghiogheny   Full 8-digit WRCU databases for the rest of 12 Water-resources regions are downloadable from the USGS Website     Download PDF Reader     Instruction for copying computer models bigger than 1.44 MB to multiple floppy disks