Description: Soil susceptibility to flooding is the temporary inundation of an area caused by overflowing streams, by runoff from adjacent slopes, or by tides. Water standing for short periods after rainfall or snowmelt is not considered flooding, and water standing in swamps and marshes is considered ponding, rather than flooding. Frequency classes are expressed as Rare, Occasional, Frequent, Very Frequent, and Not Rated. Estimates of flooding class are based on the interpretation of soil properties and other evidence gathered during soil survey field work.
The purpose is to identify those soil map units that may be subject to flooding in comparison to those that may be wet for other reasons such as high water table or ponding. The susceptibility of soils to flooding is an important consideration for building sites, sanitary facilities, cropland, and other uses. Additional information on the soil flooding duration and month of occurrence is available at the Web Soil Survey http://websoilsurvey.nrcs.usda.gov/
The source map scale is 1:12,000 (1 inch = 1,000 feet). This information is designed to be viewed and analyzed at this map scale. The minimum size delineation is 3 acres.