Indiana Floodplain Mapping
The Engineering Service Center of the Indiana Department of Natural Resources, Division of Water, provides engineering and technical support in support of Floodplain Management in Indiana.
The three Engineering Services Basin Sections (North, Central, and South) develop hydrologic and hydraulic models and floodplain maps, review technical models submitted for permits and floodplain assessments, and evaluate proposed alterations to National Flood Insurance Program studies.
Additionally, as a Cooperating Technical Partner with FEMA, the three Engineering Services Basin Sections are continuously identifying, delineating and updating flood hazard areas, including floodway, flood fringe, and floodplain for all the counties in the State.
This information will be used to update the Flood insurance Studies (FIS) and Flood Insurance Rate Maps (FIRMs) in a digital format. The new flood maps will allow the State, counties and municipalities to administer a floodplain management program to decrease existing flood damages, mitigate future flood damages, and promote the health, safety, and general welfare of the people of Indiana.
The following quick links identify major programs managed by or associated with the Engineering Service Center. To receive updates by email of ESC information, use the following link (Sign up to receive Engineering Service Center e-mail updates).
Indiana Floodplain Mapping Quick Links
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.
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