Missouri 11-Digit Hydrologic Units
| 8-digit HU | 11-digit HU | 14-digit HU | find your HU | map data sources |An 11-digit hydrologic unit is a drainage watershed that maintains a typical size of 40,000 to 250,000 acres. Each 11-digit HU is completely contained within one 8-digit HU. The 11-digit HU boundaries are delineated by NRCS based on 1:24000 scale USGS topographic maps.
Select a county from the list or map below to access the map links of the 11-digit hydrologic units.
