Northern Missouri
Worth County sits at the headwaters of the Grand River
The Grand River system drains Worth County, which matters for floodplain mapping, low-lying ground, and rural land along the streams.
Worth County is small on the map, but it sits in a big water story. The Missouri Department of Conservation describes the Grand River Basin as the largest Missouri basin north of the Missouri River. Its drainage starts in southern Iowa and northern Missouri, then gathers through a mostly rural, farm-country landscape.
That makes the headwater setting more than a geography detail. In Worth County, little creeks and forks are part of a much larger Grand River system. The same stream corridors that make the place feel open and rural can also matter for low ground, crop fields, access roads, bridges, and building sites.
For a land buyer or longtime resident, the useful move is simple. Use MDC to understand the watershed, then use FEMA’s Flood Map Service Center for the exact parcel. A road map can show a creek name. It cannot tell you whether a house site, driveway, shed pad, or bottom field is in a mapped floodplain.
Where to see it
- Grand River watershed
Use MDC for the watershed story, then FEMA for parcel-level flood maps.
References
More from Worth County: browse every local note for the county.
Last checked against the sources above: July 3, 2026.