MO Missouri Porch

Northern Missouri

Three rivers meet the land in Clark County

Clark County's eastern and northern edges follow the Mississippi and Des Moines rivers, with the Fox River inland, so flood-zone status is a real factor for buyers and varies parcel by parcel.

floodplainmississippi riverdes moines riverfox riverfema

Clark County sits in Missouri’s far northeast corner. Water touches the land on more than one side. The Mississippi River forms part of the eastern edge. The Des Moines River runs along the north, toward the spot where Missouri, Iowa, and Illinois meet. The Fox River runs through the middle of the county. So low, flat land near rivers, called floodplain or bottomland, is a real part of the picture for rural property here. Flood-zone status can change from one parcel to the next. Even small creeks can flood, so the big rivers are not the only thing worth checking. If you are buying or own land, the exact parcel’s flood-zone status is the thing to look up at the FEMA Flood Map Service Center, which shows what flood risk and any protection apply to that address. The whole county is not all safe or all at risk, so the answer comes parcel by parcel.

References

More from Clark County: browse every local note for the county.

Last checked against the sources above: June 15, 2026.

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