Blackstone River HUC8 01090003
A 1,229 km² sub-basin of the New England region in MA, RI. 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
82
Healthy
Drought index
17
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 7 reporting
Median flow
76%
p38 of record
Water assets
3,519
1 springs · 1,583 wells
USGS gauges (8)
- BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA0110973050 cfsp30 · normal
- BLACKSTONE R AT ROOSEVELT ST AT PAWTUCKET RI01113895156 cfsp32 · normal
- BLACKSTONE RIVER, RT 122 BRIDGE NEAR UXBRIDGE, MA01111212111 cfsp34 · normal
- BLACKSTONE RIVER AT WOONSOCKET, RI01112500153 cfsp38 · normal
- QUINSIGAMOND RIVER AT NORTH GRAFTON, MA011100005 cfsp40 · normal
- BRANCH RIVER AT FORESTDALE, RI0111150027 cfsp45 · normal
- NIPMUC RIVER NEAR HARRISVILLE, RI011113003 cfsp52 · normal
- WEST RIVER BELOW WEST HILL DAM, NR UXBRIDGE, MA011112002 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 17 | 0 | 0/7 | p38 |
Top water assets
- 66Ocean State Powerreservoir
- 66Diamond Hill Reservoirreservoir
- 66Harris Pondreservoir
- 66West Hill Damreservoir
- 66Woonsocket Reservoir # 1reservoir
- 66Valley Fallsreservoir
- 66Pawtucket Reservoirreservoir
- 65Coes Lower Pond Damreservoir
- 65Ironstone Reservoir Damreservoir
- 65Singletary Brookriver