External Services
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Floodplain Zoning and Management Resources
Model Zoning OrdinanceA new standard model floodplain ordinance went into effect on April 8, 2022. This model should be used by any community amending or adopting a floodplain ordinance after that date.For copies of the documents listed below in…
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Regulations and ordinances
Regulations Communities are required under s. 87.30, Wis. Stats. to adopt a reasonable and effective floodplain ordinance within one year after hydraulic and engineering data adequate to formulate the ordinance becomes available. Communities are…
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Mitigation and Grants
Mitigation While it is not possible to prevent natural hazards, it is possible to reduce their consequences. We have tools and techniques which, when put into effect in a timely fashion, allow us to avoid the worst-case scenario when a hazard does…
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Floodplain Mapping
The Federal Emergency Management Agency (FEMA) produces Flood Insurance Rate Maps (FIRMs) that show areas at risk to flooding. The FIRMs are based on engineering studies called Flood Insurance Studies (FIS). The FIRMs can be changed through Letters…
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Viewing Floodplain Analysis and Maps
Wisconsin DNR floodplain mapping applicationThe DNR Floodplain Management Program's mapping application allows the public access to the Wisconsin Floodplain Analysis database and FEMA's National Flood Hazard Layer. Floodplain Insurance Studies and…
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Letters of Map Change (LOMC)
Letters of Map Amendment (LOMA), Letters of Map Revision (LOMR) and Letters of Map Revision Based on Fill (LOMR-F) are documents issued by FEMA that officially remove a property and/or structure from the floodplain for flood insurance purposes. They…
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Flood Inundation Mapping
Do you live near the Rock River, Upper Fox River, Cedar Creek, Milwaukee River, or Wisconsin River? New interactive maps can help you predict when your property may flood. The maps show where flooding may occur over a range of river levels and are…
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Do I need flood insurance?
Flood-proof your finances and get peace of mind. Buy flood insurance.Anyone can be financially vulnerable to floods. Homeowners and renters outside of designated floodplains are at risk and most are not properly insured for floods. In fact, people…
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Floodplain Overview
Flooding is part of the normal cycle of streams and lakes. It has occurred for as long as there has been rain and land. Flooding only becomes a potential problem when development occurs in the floodplain. Development that occurs outside of the…
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Floodplain engineering data
The DNR engineering group does engineering studies as contractors under FEMA’s Risk MAP program. The studies are used to produce the Flood Insurance Studies and the Digital Flood Insurance Rate Maps. --> Available data The engineering data from…