Blackwater HUC8 10300104
A 4,000 km² sub-basin of the Missouri region in MO. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
80
Healthy
Drought index
53
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 2 reporting
Median flow
92%
p45 of record
Water assets
1,600
16 springs · 880 wells
USGS gauges (2)
- Blackwater River at Valley City, MO069077007 cfsp39 · normal
- Blackwater River at Blue Lick, MO0690800023 cfsp51 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 53 | 0 | 0/2 | p45 |
| 2026-10-20 | 53 | 0 | 0/2 | p45 |
| 2026-10-19 | 53 | 0 | 0/2 | p45 |
| 2026-10-18 | 53 | 0 | 0/2 | p51 |
| 2026-10-17 | 53 | 0 | 0/2 | p52 |
| 2026-10-16 | 53 | 0 | 0/2 | p42 |
| 2026-10-15 | 0 | 0 | 0/2 | p45 |
| 2026-10-14 | 0 | 0 | 0/2 | p28 |
| 2026-10-13 | 0 | 0 | 0/2 | p29 |
| 2026-10-12 | 0 | 0 | 0/2 | p29 |
| 2026-10-11 | 0 | 0 | 0/2 | p32 |
| 2026-10-10 | 0 | 0 | 0/2 | p37 |
| 2026-10-09 | 0 | 0 | 0/2 | p36 |
| 2026-10-08 | 3 | 0 | 0/2 | p38 |
Top water assets
- 66Holden New City Reservoirreservoir
- 66South Fork Blackwater River Dam Lt-67reservoir
- 66Blind Pony Damreservoir
- 66South Fork Blackwater River Dam E- 7reservoir
- 66Sexton Lake Damreservoir
- 66E.Br So Fk Blackwater B-11reservoir
- 66Gann Lake Damreservoir
- 66South Fork Blackwater F-1reservoir
- 66Maple Leaf Lake Damreservoir
- 66Edwin A. Pape Lake Damreservoir