Subsidence Subsidence, the gradual lowering of the surface of Venice, has contributed – along with other factors – to the seasonal Acqua alta ("high water") when the city's lowest lying surfaces may be covered at high tide.
Subsidence Subsidence the gradual lowering of the surface of Venice, has contributed – along with other factors – to the seasonal Acqua alta ("high water") when the city's lowest lying surfaces may be covered at high tide