Define base flood elevation how to#

Define base flood elevation how to#

For further instructions on how to use the portal, please visit the Home page. This can be used as an approximate number only, as LiDAR is not survey accurate. This Portal also provides elevations obtained from the LiDAR data in Kansas. Zone VE: Special Flood Hazard Areas along coasts subject to inundation by the 100-year flood with additional hazards due to velocity (wave action). For detailed study areas such as zone AE, AO, or AH, please consult the Flood Insurance Study (FIS) or map panels, which are available from the FEMA Map Service Center. They are areas of known flood risk, however no detail analysis was performed to determine flood elevations or base flood elevations. Digital Flood Insurance Rate Maps comprise: 1) base map imagery, a digital orthophoto, that provides land surface information such as streams, roads, vegetation, and buildings 2) base elevation data draped on top of the digital ortho-photo to provide 3-dimensional information, and 3) engineering analysis such as data and models of stream and ri. The base flood elevation is the computed elevation to which water is expected to rise during the one-percent annual chance flood. What is a Base Flood Elevation A base flood elevation (BFE) is the height of the base flood, usually in feet, in relation to the National Geodetic Vertical Datum of 1929, the North American Vertical Datum of 1988, or other datum referenced in the Flood Insurance Study report, or depth of the base flood, usually in feet, above the ground surface. This site will allow you to request a Base Flood Elevation (BFE) where data is available within Zone A floodplains in Kansas. In A Zones, NYC Building Code requires buildings to be elevated or flood-proofed based on the Base Flood Elevation identified on the FEMA’s firms. These areas are not subject to high velocity wave action but are still considered high risk flooding areas. The BFE Portal is a collaborative effort between the Kansas Geological Survey's Data Access and Support Center and the Kansas Department of Agriculture's Division of Water Resources. A Zone: A portion of the area subject to flooding from the 1 annual chance flood. About the Kansas Base Flood Elevation Portal Base flood elevation (BFE) and design flood elevation (DFE) are essential references for building floodproofing.