A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health.
Greece
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Lower Otay Dam washed out completely in the 1916 Hatfield flood.
Sweetwater Dam was damaged in the 1916 Hatfield Flood but did not fail.