Flood risk takes varied forms in The Living Coast, ranked in the top ten most vulnerable places nationally:
Surface water - "muddy flooding" runoff from the Downs and over urban surfaces, e.g. at Bevendean
Ground water - rising up from the chalk aquifer in wet winters, e.g. at Patcham
River water - spreading over the floodplains of the Adur and especially the Ouse river in winter
Coastal & Tidal - exacerbated by high spring tides, storm surges and rising sea levels