Flood Mapping

Synonyms: Flood plain, flood line, floodplain, floodline

Regulatory flood lines delineate the predicted high water mark along the bank of streams and rivers based on the hypothetical 100-year storm event, or, the observed high water mark in areas affected by Hurricane Hazel in 1954 which exceed the hypothetical prediction. The regulatory flood line is used in setting policies for development in vulnerable, water adjacent property.