Floodplain Information

About the Floodplain

The City of Watertown has three watersheds: Willow Creek, Big Sioux River, and Roby Creek along with two lakes: Lake Kampeska and Lake Pelican which is important to understand if your current property or future project is located within the floodplain. 

Am I in the floodplain?

To see if your property is in the floodplain click here to view a map from Federal Emergency Management Agency (FEMA). You may also contact City staff in the our office who can assist with technical questions to ensure your property and structures are compliant with FEMA and City ordinance.

What does it mean if I am in the floodplain?

All properties that fall within the floodplain have additional restrictions that apply for property improvement depending on the situation. Here are some of the most common situations that your property may fall into. Click on the sustenance to expand for more information or to condense information.

By default the property is considered completely within the floodplain by the City. Additional details can be provided to the City to show that the building, property, or part of the property should be considered out based on the ground level. In this situation usually an Elevation Certificate (EC) or a site plan is required by City for projects. 

Is flood insurance required?

The City does not require floodplain insurance but property owners should be aware those decisions are most commonly made by a property's lending institution. The property owner may need to hire a surveyor or engineer to complete a Elevation Certificate (EC) and then obtain a letter from FEMA showing that the property is reasonably safe from flooding. 

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