USGS OFR 2008-1206: Coastal Change Along the Shore of Northeastern South Carolina: The South Carolina Coastal Erosion Study, Table 5.1

U.S. Geological Survey Open-File Report 2008-1206

Coastal Change Along the Shore of Northeastern South Carolina: The South Carolina Coastal Erosion Study

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Table 5.1. A conceptual sediment budget for the Grand Strand region. Table lists estimated volumes of mobile sediment annually lost to sinks and gained from different sources (modified from Gayes and others, 2003). Numbers in first column correspond to numbered arrows in Figure 5.1. Dredging records are from C. Mack (U.S. Army Corps of Engineers, oral communication, 2003).

SEDIMENT SINKS (LOSSES)	VOLUME (CUBIC METERS PER YEAR)	BASIS OF ESTIMATE
1. Winyah Bay	284,000	1994–2002 dredging records
2. North Island Spit	79,000	Historic spit growth
3. North Inlet	?
4. Murrells Inlet	75,000	1974–1978 dredging records
5. Hog Inlet	?
6. Little River Inlet	57,000	1982–1995 dredging records
7. Loss offshore	?
Total Sinks	495,000

SEDIMENT SOURCES (GAINS)
8. Rivers	very small	Patchineelam and others (1999)
9. Beach and shoreface erosion	104,000	Beach profile migration based on the long-term average erosion rate
10. Inner shelf erosion	391,000	Difference between total losses (#1–7) and gains from other sources (#8–9)
Total Sources	495,000

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