YANKTON, S.D.(WNAX)- The Federal Emergency Management Agency is updating flood maps across the region, and those could have a big impact on cities, counties, and homeowners.

Dave Mingo, Community and Economic Development Director for the City of Yankton, says they disagree with the proposed changes in the preliminary maps they have seen.

Mingo says the city may have to spend hundreds of thousands of dollars on their own flood plain studies.

Mingo says the proposed FEMA maps make major changes to the potential flood area.

Mingo says FEMA plans public hearings on their proposal next year, with adoption after that process.