WNAX (Yankton, SD):  The Federal Emergency Management Agency is updating flood plain maps across the state.

Marc Macy with the South Dakota Office of Emergency Management says most east river counties will see the updates.

Macy says the new maps could lead to changes in county zoning.

Macy says the flood plain mapping will take some time.

Macy says the new maps may lead to wider availability of flood insurance to homeowners.