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Welcome to the Division of Water Map Modernization web page. This page was developed to help support the state's floodplain mapping Initiative. On this site you will be able to view the preliminary maps, check the status of the mapping, and find general information regarding the mapping program, floodplain management, and hydrologic and hydraulic modeling. Maps are in PDF format. To view them, make sure your Web browser is configured to display PDFs (instead of downloading and viewing them in Adobe Acrobat). On the Macintosh, the procedure works with Safari, but not Firefox.
Available Preliminary Digital Flood Insurance Rate Maps are shaded in yellow, final maps are blue and will redirect you to the FEMA website.
Additional revisions are preliminary and identified with a cross hatch pattern on the map at right for limited counties identified as PMR (Physical Map Revision) or LOMR (Letter Of Map Revision).
Frequently Asked Questions: Answers regarding floodplain maps and flood insurance.
Preliminary Digital Flood Insurance Rate Maps: View and download preliminary Digital Flood Insurance Rate Maps issued by FEMA and IDNR. If you received a letter from IDNR regarding changes to the floodplain status of a property, click here to view maps.
General Guidelines for the Hydrologic-Hydraulic Assessment of Floodplains in Indiana: Technical guidance documents for developing floodplain modeling. Also includes external links to other modeling information.
Floodplain Management: More information regarding floodplain management with respect to both insurance and construction.
Indiana Floodplain Information Portal: Launch INFIP, an interactive floodplain mapping tool, which includes address searching and eFARA, the Division of Water’s on-line floodplain analysis submittal program. If you received a letter from IDNR regarding changes to the floodplain status of a property, click here to enter an address and view floodplain information.
Indiana Peak Discharge Determination System: Launch IPDDS, the Division of Water’s hydrologic computation system. Includes directions on how to submit information to the Division for approval (under construction).
Previous Assessments on File: View and download previous hydrologic and hydraulic models developed for Flood Insurance Studies, Construction in a Floodway applications, Floodplain Analysis / Regulatory Assessment (FARA), others.
ESC Contact Information: Contact information for the ESC section managers.