NOTICE: has been archived.

The archive will be available at for approximately one year (through September 2020). If you use or are responsible for content here that is not yet available elsewhere, please contact the PWD Digital Team.

Glossary beginning with F

terms for which definitions are available


Federal Emergency Management Agency


Fluvial Geomorphology; the study of a stream’s interactions with the local climate, geology, topography, vegetation, and land use; the study of how a river carves its channel within its landscape


waterborne waste material and debris (e.g., plastics, polystyrene, paper) that float at or below the water surface


a temporary condition of partial or complete inundation of land areas from the overflow of streams, rivers, and other waters


any land area susceptible to inundation by water from any natural source or delineated by applicable Federal Emergency Management Agency maps and studies as being a special flood hazard area


of or relating to flowing waters, especially rivers