![]() As new data and technology become available, maps are updated to show areas where the risk of flooding has changed. How was the National Risk Index developed?Ĭan't find the help you're looking for? Visit our Contact Us page and send your question(s) to the National Risk Index Team. Flood maps, also known as Flood Insurance Rate Maps, are a useful tool for assessing a property’s flood risk, and also are a factor in flood insurance and building requirements. download a printable flood map for planning (PDF) showing your flood zone (also known as a product 1) request flood risk assessment data (also known as a.What do the scores and ratings mean, and how do I interpret them?.How are all the terms used in the National Risk Index defined?. ![]() ![]() What are the components used to calculate the National Risk Index? Why should I use the National Risk Index? / What can it help with?.How do I use the map and reporting tools?.The City of Burien applied for a Letter of Map Revision (LOMR. The FIRM is used to determine flood insurance rates and to help the community with floodplain management. Use the National Risk Index Data Lookup The Flood Insurance Rate Map (FIRM) for a community depicts land that has been determined to be subject to a 1 percent (100-year) or greater chance of flooding in any given year.The Index leverages available source data for 18 natural hazards, social vulnerability, and community resilience to develop a baseline relative risk measurement for each U.S county and Census tract.ĭo you need help with the National Risk Index? Check out our Frequently Asked Questions, or review and follow the links below. The National Risk Index is a dataset and online tool to help illustrate the U.S communities most at risk for natural hazards.
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