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HAZUS is a free software developed by FEMA that estimates the risk and losses from earthquakes, floods, hurricanes and other disasters. It is used for mitigation, recovery, preparedness and response planning by various users worldwide.
A flood insurance rate map (FIRM) is an official map of a community in the US that shows floodplains and risk zones as delineated by FEMA. FIRMs are used for town planning, insurance, and individual protection against flood.
PASDA is a public geospatial data clearinghouse for Pennsylvania, offering access to thousands of data files, map services, and web applications. The Pennsylvania Imagery Navigator is one of the applications that allows users to view and download imagery and LIDAR data for the state.
FEMA Risk Rating 2.0 rates were not expected to dramatically change for most current policyholders. From 1996 to 2019, 99 percent of U.S. counties experienced at least one flooding event.
A comprehensive list of global and regional GIS data sources and geoportals for various themes and purposes. Includes links, descriptions, and categories of data providers and datasets.
SLOSH is a computerized model that estimates storm surge depths from historical, hypothetical, or predicted hurricanes. It is used by emergency managers and the National Hurricane Program to evaluate the threat and plan evacuations.
Learn about the USNG, a multi-purpose location system of grid references used in the US. It is based on the UTM coordinate system and provides a compact, user friendly format for local navigation and mapping.
Theoretically a 100-year flood has a 1 percent chance (1/100 = 0.01 or 1 percent) of occurring in any given year and a 500-year flood has as a 0.2 percent chance (1/500 = 0.002 or 0.2 percent) of occurring in any given year. [12] However, these expected flood elevations actually occur more or less often than expected. [13]