New maps show updated flood risks - CBS46 News

New maps show updated flood risks in Upper Chattahoochee River Region

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New flood insurance rate maps will soon go into effect in metro Atlanta for communities in the Upper Chattahoochee River Region.

Flood maps for Cobb, Douglas, Forsyth and Gwinnett counties will be effective on March 4, maps for DeKalb County will be effective in May and maps for Fulton County will be effective in September.

Coweta County's flood maps were effective in February.

The updated maps are more precise than older maps because better flood hazard and risk data has been incorporated.

The Federal Emergency Management Agency and the Georgia Department of Natural Resources have been working with county and municipal governments over the last several years to incorporate the new data.

Flood risks change over time because of construction, development, environmental changes, floodplain widening or shifting and other factors.

If you live in an area with a new map, visit to find your flood risk online.

You can also contact your local floodplain manager with questions about the new maps, and to learn more about flood risks in your community.

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