NATR
Natchez Trace Parkway
Parkway
Southeast
National Park Service
BLRI
Blue Ridge Parkway
UPDE
Upper Delaware SRR
Scenic and Recreational River
Northeast
FIIS
Fire Island NS
National Seashore
CAHA
Cape Hatteras NS
CALO
Cape Lookout NS
ASIS
Assateague Island NS
GUIS
Gulf Islands NS
PAIS
Padre Island NS
Intermountain
RIGR
Rio Grande WSR
Wild and Scenic River
MNRR
Missouri NRR
National Recreation River
Midwest
MISS
Mississippi NRRA
National River and Recreation Area
BUFF
Buffalo NR
National River
CHAT
Chattahoochee River NRA
National Recreation Area
NERI
New River Gorge NR
GARI
Gauley River NRA
CHOH
Chesapeake and Ohio Canal NHP
National Historical Park
National Capital
APPA
Appalachian NST
National Scenic Trail
INDU
Indiana Dunes NL
National Lakeshore
DELA
Middle Delaware NSR
National Scenic River
CACO
Cape Cod NS
ALAG
Alagnak National WR
Wild River
Alaska
LARO
Lake Roosevelt NRA
Pacific West
NIOB
Niobrara NSR
National Recreational River
SACN
Saint Croix NSR
National Scenic Riverway
OZAR
Ozark NSR
National Scenic Riverways
OBRI
Obed WSR
BLUE
Bluestone NSR