The State of the Shore — South Shore NY

Atlantic swell— ft

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TempFlowChloroOff

WindCurrentsOff

Chart Satellite + seafloor Live

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 and watch the line move against the historical trend.

± ~10 m accuracy · satellite-derived shoreline (Vos et al. 2023)

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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 rate · USGS DSAS (through ~2009) — not today's waterline. For the current shore, switch to Live.

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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

Each segment is how fast that stretch of shore has moved — red = losing land, blue = gaining. A long-term average (through ~2009), not today's waterline — for the current shore switch to Live.

Sea surface temp · JPL MUR · —

cooler°warmer

Line = USGS DSAS long-term shoreline-change rate at 3,518 transects. Source: USGS National Assessment of Shoreline Change (OFR 2010-1118/1119, Hapke et al.).