Upper Heart HUC8 10130202
A 4,440 km² sub-basin of the Missouri region in ND. 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
56
Moderate
Drought index
226
Severe
Area in D2+
25.64%
0% exceptional (D4)
Gauges below normal
50%
of 4 reporting
Median flow
48%
p25 of record
Water assets
1,486
1 springs · 632 wells
USGS gauges (4)
- HEART RIVER NEAR SOUTH HEART, ND063430000 cfsp6 · much below normal
- GREEN RIVER NEAR NEW HRADEC, ND063446000 cfsp10 · below normal
- HEART RIVER AB LAKE TSCHIDA NEAR GLEN ULLIN, ND063457808 cfsp39 · normal
- HEART RIVER NEAR RICHARDTON, ND063455006 cfsp40 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 226 | 25.64 | 2/4 | p25 |
Top water assets
- 67Heart Butte Damreservoir
- 67Heart River Nr South Heart, Ndriver
- 67Green River Near New Hradec, Ndriver
- 67Heart Riverriver
- 67Antelope Creekriver
- 67Heart Riverriver
- 67Heart Riverriver
- 67Heart Riverriver
- 67Heart Riverriver
- 67Heart River Nr Richardton, Ndriver