Knowledge of the basic hydrology of North Carolina 's major estuaries and sounds is necessary to help solve hydrology-related estuarine problems which include contamination of some estuaries with municipal and industrial wastes and drainage from adjacent intensively-farmed areas, nuisance-level algal blooms, excessive shoaling in some navigation channels, saltwater intrusion into usually fresh estuarine reaches, too-high or too-low salinities in nursery areas for various estuarine species, and flood damages due to hurricanes. Saltwater intrusion occurs from time to time in all major estuaries in North Carolina except the Roanoke River, where releases from Roanoke Rapids Lake and other reservoirs during otherwise low-flow periods effectively block saline water from the estuary. (Woodard-USGS)
Additional publication details
USGS Numbered Series
Hydrology of major estuaries and sounds of North Carolina
Water-Resources Investigations Report
U.S. Geological Survey, Water Resources Division,
xiii, 175 p. :ill., maps (some fold. in pocket) ;27 cm.