FIGURES 



Number Page 



1 Major river floodplains and their associated bottomland hardwood 

 cominunities within the Carolinas, Georgia, and Florida 2 



2 Landsat image of the floodplain of the Oconee River, GA, showing 

 how large alluvial rivers that drain the Piedmont form extensive 



tracts of bottomland hardwoods below the fall line 5 



3 Point bar and meander formation in floodplains 6 



4 Diagram of an idealized alluvial floodplain with various 



depositional environments 9 



5 A meander bend and cross section showing levee and ridge and 



swale topography so common on modern and relict surfaces 10 



6 Aerial photomosaic of the lower Roanoke River indicating flood- 

 plain features characteristic of rivers approaching the coast 11 



7 Sea level changes between the Sangamon interglacial period and 



modern times 13 



8 Development of present-day relict and modern floodplain surfaces ... 14 



9 Hydrographs of four types of southeastern floodplain rivers and 



streams 17 



10 Hydrographs of an alluvial river showing the possible effects of 

 an increase in floodplain width on water levels, between upstream 



and downstream 17 



11 Two photos showing drydown and inundation of the floodplain 



in the Congaree Swamp National Monument 18 



12 Relation of flood discharge of Oconee River (GA) to distance 



downstream 19 



13 Diagram of the water budget for Creeping Swamp (NC), July 1974- 



June 1975 19 



14 Indication of where Tertiary limestones lie at or near 

 the surface, often giving rise to spring-fed rivers and 



contributing heavily to the Suwannee-Santa Fe system 19 



VI 



