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The Louisville/Jefferson County Information Consortium (LOJIC) is a multi-agency effort to build and maintain a comprehensive Geographic Information System (GIS) to serve all of Louisville Metro, Kentucky. All participants are sharing the cost and effort involved in the full development and successful implementation of LOJIC. Present LOJIC participants include:

Louisville Metro Government
Louisville Water Company (LWC)
Jefferson County Property Valuation Administrator (PVA)
Louisville and Jefferson County Metropolitan Sewer District (MSD)


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The information on this page (the dataset metadata) is also available in these formats.


via the DKAN API

National Flood Hazard - Letter of Map Revision (LOMR)

The S_LOMR feature class should contain at least one record for each Letter of Map Revision incorporated into the NFHL. Multipart polygons are not allowed. The spatial entities representing LOMRs are polygons. The spatial information contains the bounding polygon for each LOMR area, broken on panel boundaries.

Flood hazard and supporting data are developed using specifications for horizontal control consistent with 1:12,000–scale mapping. If you plan to display maps from the National Flood Hazard Layer with other map data for official purposes, ensure that the other information meets FEMA’s standards for map accuracy.

The minimum horizontal positional accuracy for base map hydrographic and transportation features used with the NFHL is the NSSDA radial accuracy of 38 feet. USGS imagery and map services that meet this standard can be found by visiting the Knowledge Sharing Site (KSS) for Base Map Standards (420).

The NFHL data are from FEMA’s Flood Insurance Rate Map (FIRM) databases. New data are added continually. The NFHL also contains map changes to FIRM data made by Letters of Map Revision (LOMRs).

The NFHL is stored in North American Datum of 1983, Geodetic Reference System 80 coordinate system, though many of the NFHL GIS web services support the Web Mercator Sphere projection commonly used in web mapping applications.

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