Vermont faces flood risk from riverine flooding along the Winooski, Lamoille, Connecticut, and Otter Creek rivers, as well as flash flooding in the state's steep mountain valleys. Tropical Storm Irene in 2011 was the most devastating flood in modern Vermont history, causing over $800 million in damage and destroying bridges, roads, and homes across the state. The Winooski River valley was particularly hard hit, with Waterbury and Duxbury experiencing catastrophic flooding. The Lamoille River valley through Johnson and Hardwick also suffered severe damage. Vermont's narrow valleys and steep terrain create dangerous flash flood conditions during intense rainfall. The state has approximately 80 NFIP-participating communities. The Connecticut River, which forms Vermont's eastern border, regularly floods its valley affecting communities from Brattleboro to Newport. Climate change is increasing the intensity of rainfall events and the frequency of extreme precipitation in Vermont. The state's extensive stream network and mountain terrain make flash flooding a persistent threat, particularly during summer thunderstorms and fall tropical system remnants. Vermont's commitment to stream management and floodplain restoration has helped reduce flood risk in some communities but the state remains vulnerable to extreme events.
Vermont Flood Zones
FEMA Flood Zone Lookup in Vermont
Look up any address in Vermont to find its FEMA flood zone designation, insurance requirements, and base flood elevation — sourced from the official National Flood Hazard Layer.
Zone AE along the Winooski, Lamoille, Connecticut, and Otter Creek rivers; Zone X (shaded) for moderate-risk areas in Burlington, Montpelier, and Brattleboro; Zone AH for shallow flooding in river valley communities; Zone AO for overland flooding in mountain valleys.
Washington County, Lamoille County, Chittenden County, Windham County, Addison County
NFIP premiums typically range $600-$1,200 for standard-risk properties. Connecticut River valley properties can run $1,000-$2,500 annually. Winooski River valley properties in Waterbury face elevated premiums due to Irene damage history.
Frequently Asked Questions — Vermont
How bad was Tropical Storm Irene in Vermont?
Irene was the most devastating flood in modern Vermont history, causing over $800 million in damage. Bridges, roads, and homes were destroyed across the state. Waterbury and Duxbury in the Winooski valley experienced catastrophic flooding.
Does Vermont flood?
Yes. Vermont's narrow valleys and steep terrain create dangerous flash flood conditions during intense rainfall. The state has experienced significant floods throughout its history with Tropical Storm Irene being the most costly in modern times.
Is flood insurance available in Vermont?
Yes. Vermont has approximately 80 NFIP-participating communities. Given the state's mountain terrain and river valley flood risk, flood insurance is recommended for properties along rivers and in areas prone to flash flooding.
Disclaimer: FloodZoneCheck is a free research tool using public FEMA data, not an official Standard Flood Hazard Determination. Lenders require a certified determination from a licensed provider. Zone boundaries can cross a single parcel — confirm exact risk and insurance requirements with FEMA or your insurer before relying on this for a purchase or insurance decision.
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