In September 1999, Hurricane Floyd’s heavy rainfall caused severe riverine flooding and extensive property damage to eastern North Carolina. Because no current detailed flood data existed for specific waterways, the Federal Emergency Management Agency (FEMA) and the North Carolina Department of Emergency Management (NCDEM) contracted for hydraulic studies to establish the approximate base flood elevations (100-year flood). Watershed Concepts was sub-contracted by Michael Baker Jr., Inc. to complete these studies for seven counties in eastern North Carolina. For additional information about the Eastern NC Flood Recovery Map Project, contact or at Watershed Concepts.

Use of Data

The results of this analysis can be downloaded from this web site for use by local communities, contractors, and members of the public at no charge. This data will eventually be used to revise the communities’ effective Flood Insurance Rate Maps.

Methodology

The base flood elevations were determined through hydrologic analysis to determine flood discharges and hydraulic analysis to determine peak water surface elevations. The hydrology was based on USGS regression equations for the coastal plain region of North Carolina. The hydraulic study utilized USGS 7.5 minute quadrangle map contours to determine cross section geometries and the US Army Corps of Engineers step backwater program HEC-RAS to compute flood elevations. Since this was an approximate study, no bridge, culvert or dam crossings were taken into account in the analysis.

Data Descriptions

Flood Recovery Map Panels

GIS Data

Engineering Data

Approximate Data by County

County and Waterways Detailed Information

Click on a county on the map to retrieve data.
Beaufort Co. | Duplin Co. | Edgecombe Co. | Hertford Co. | Jones Co. | Pitt Co. | Wilson Co. |
For Additional Information about the Eastern NC Flood Recovery Map Project or HSMM, Inc. Contact:
Mr. Scott K. Edelman, P.E. President Phone: (336) 855-8422 email:
Mr. Joseph Chapman, P.E., CFM Senior Vice President Phone: (704) 643-0108 email:
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