Lower Missouri HUC8 10300200
A 4,119 km² sub-basin of the Missouri region in MO. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
75
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
29%
of 14 reporting
Median flow
95%
p45 of record
Water assets
4,364
40 springs · 2,573 wells
USGS gauges (14)
- Missouri River at Hermann, MO0693450038,300 cfsp9 · much below normal
- Missouri River at Washington, MO0693545040,100 cfsp9 · much below normal
- Missouri River near Labadie, MO0693555041,800 cfsp9 · much below normal
- Missouri River at St. Charles, MO0693596545,100 cfsp15 · below normal
- Mill Creek near Florissant, MO069359970 cfsp32 · normal
- Caulks Creek at Chesterfield, MO069358307 cfsp40 · normal
- Fee Fee Creek near Bridgeton, MO069359551 cfsp41 · normal
- Cowmire Creek at Bridgeton, MO069359801 cfsp49 · normal
- Spanish Lake Trib. nr Black Jack, MO069365300 cfsp50 · normal
- Coldwater Creek near Black Jack, MO069364755 cfsp57 · normal
- Creve Coeur Creek at Chesterfield, MO069358501 cfsp58 · normal
- Bonhomme Creek near Ellisville, MO069357550 cfsp67 · normal
- Creve Coeur Creek near Creve Coeur, MO069358906 cfsp69 · normal
- Bonhomme Creek near Clarkson Valley, MO069357703 cfsp78 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 4/14 | p45 |
Top water assets
- 67Alpine Lake Damreservoir
- 66True Femme Osage Properties Lake Damreservoir
- 66Kopmann Farms - Field #N1reservoir
- 66Lake Wanderfern Damreservoir
- 66Wagner Lake Damreservoir
- 66Double D Ranch Damreservoir
- 66See Tal Lake Damreservoir
- 66Hoffman Lake Damreservoir
- 66Lakeview Acres Damreservoir
- 66Dierberg Lake Damreservoir