North Carolina Coast — Erosion, Sea-Level Rise & Flood Risk

How fast is the Outer Banks eroding?

The USGS National Assessment of Shoreline Change finds about 70% of North Carolina's ocean shoreline eroding long-term, averaging roughly -1.4 m/yr (about 2 ft/yr statewide per NC DEQ), with the Rodanthe "S-curves" losing 10–15 ft a year.

Why do houses keep collapsing in Rodanthe, North Carolina?

Rodanthe sits on a fast-migrating stretch of the Cape Hatteras National Seashore, and since 2020 the National Park Service has recorded about a dozen oceanfront houses collapsing into the surf.

Is sea level rising faster on the North Carolina coast?

Yes — NOAA's Duck gauge (station 8651370) shows about 4.9 mm/yr of relative sea-level rise, and Sallenger et al. (2012) mapped a sea-level-rise acceleration "hotspot" just north of Cape Hatteras at three to four times the global rate.

What FEMA flood zones cover North Carolina's barrier islands?

Open-ocean frontage is mapped as FEMA VE (coastal high-hazard, wave-action) zone and the sound side as AE zone, both requiring Base Flood Elevation compliance under the NFIP.

How do I get an erosion and flood read for a specific North Carolina address?

Use the Psammite coastal finder, or order a $99 property certificate for a cited, parcel-level erosion-rate, setback, and flood-zone screening.

NC swell— ft
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TempFlowChloroOff
WindCurrentsOff
◗ Chart◉ Satellite + seafloor◈ Live shoreline
Live shoreline · Sentinel-2
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Blue = water. Default is a 12-month median of every clear Sentinel-2 pass — the current mean shoreline. Slide left to step back through individual dated passes.
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—ft/yr long-term
—ft setback
—yr horizon
Blue overlay = today's satellite waterline. Rate & setback are the USGS long-term record for this parcel.
Ocean shore eroding
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long-term, USGS DSAS · Outer Banks → Cape Fear
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Eroding shore
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Fastest erosion
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Fastest gain
Long-term rate · m/yr (USGS DSAS)
−5 · erosion0 · held+20 · accretion
Sound & estuarine shore — Pamlico & Albemarle — not in the USGS open-ocean transect record
Sea surface temp · JPL MUR · —
cooler°warmer
Colored line = USGS DSAS long-term shoreline-change rate (Southeast Atlantic, OFR 2005-1401, Morton & Miller 2005), m/yr. ~70% of the NC ocean shore is eroding long-term; the Rodanthe "S-curves" exceed 10 ft/yr (NPS). Relative sea level: NOAA Duck 8651370 (~4.9 mm/yr). Screening, not a survey.