![]() The NFHL also contains map changes to FIRM data made by LOMRs. The NFHL data are from FEMAs FIRM databases. You will need a username and password to access this information. United States Geological Survey (USGS) imagery and map services that meet this standard can be found by visiting the Knowledge Sharing Site (KSS)įor Base Map Standards (420). The minimum horizontal positional accuracy for base map hydrographic and transportation features used with the NFHL is the NSSDA radial accuracy of 38 feet. If you plan to display maps from the NFHL with other map data for official purposes, ensure that the other information meets FEMAs standards for map accuracy. To view the NFHL on the FEMA GeoPlatform go to NFHL on FEMA GeoPlatform.įlood hazard and supporting data are developed using specifications for horizontal control consistent with 1:12,000–scale mapping. FEMA GeoPlatformįEMA's GIS flood map services are available through FEMAs GeoPlatform, an ArcGIS Online portal containing a variety of FEMA-related data. ![]() You can view the National Flood Hazard Layer on the NFHL site. To better understand preliminary data please see the Preliminary National Flood Hazard Layer webpage. FEMA will remove pending data once effective data are available. Until the data becomes effective, when it will appear in FEMA's National Flood Hazard Layer (NFHL), the data should not be used to rate flood insurance policies or enforce the Federal mandatory purchase requirement. Pending data are for early awareness of upcoming changes to regulatory flood map information. From the Flood Map Changes Viewer, you may view, download, and print flood maps for your location. To explore the current digital preliminary flood hazard data in a map, the best tool to use is the Flood Map Changes Viewer (FMCV). If the preliminary flood hazard data search tool is unavailable, please use the alternate site. The preliminary flood hazard data is available through the preliminary FEMA Map Products page. FEMA will remove preliminary data once pending data are available. Additionally, preliminary data cannot be used to rate flood insurance policies or enforce the Federal mandatory purchase requirement. Preliminary data are not final and are presented in this national layer as the best information available at this time. By viewing preliminary data and maps, the user acknowledges that the information provided is preliminary and subject to change. Preliminary data are for review and guidance purposes only. These layers are updated as new preliminary and pending data becomes available, and data is removed from these layers as it becomes effective. The Preliminary and Pending NFHL dataset represents the current pre-effective flood data for the country. Preliminary & Pending National Flood Hazard Layers To view a list of available county and single-jurisdiction flood study data in GIS format and check the status of the NFHL GIS services please visit the NFHL Status Page. Not all effective Flood Insurance Rate Maps (FIRM) have geographic information system (GIS) data available. Coastal Barrier Resources System (CBRS) and Otherwise Protected Area (OPA) units.Flood Insurance Rate Map (FIRM) boundaries, labels and effective dates.Letter of Map Revision (LOMR) boundaries and case numbers.Cross-sections and coastal transects and their labels.The primary flood hazard classification is indicated in the Flood Hazard Zones layer. The data depict effective flood hazard information and supporting data used to develop the information. From the NFHL Viewer, you may view, download, and print flood maps for your location If you want to explore the current digital effective flood hazard data in a map, the best tool to use is the NFHL Viewer. The simplest way for you to access the flood hazard data, including the NFHL, is through FEMAs Map Service Center (MSC). The NFHL is a computer database that contains FEMA�s flood hazard map data. For more information, contact Risk MAP IT Help.Īpplications that do not support these ciphers include:įEMA provides access to the National Flood Hazard Layer (NFHL) through web mapping services. This change impacts Windows 2012 R2 and prior versions, as well any applications that do not support TLS 1.2 with Cipher Suites. GIS Web Services for the FEMA National Flood Hazard Layer (NFHL)ĭue to recent changes, only supports TLS 1.2 with Cipher Suites.
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