Concord River HUC8 01070005
A 1,035 km² sub-basin of the New England region in MA. 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
79
Healthy
Drought index
35
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 5 reporting
Median flow
163%
p62 of record
Water assets
4,541
1 springs · 2,817 wells
USGS gauges (6)
- NASHOBA BROOK NEAR ACTON, MA010973002 cfsp31 · normal
- SUDBURY RIVER AT SAXONVILLE, MA0109853062 cfsp38 · normal
- CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA01099500333 cfsp62 · normal
- COCHITUATE BK BL LAKE COCHITUATE AT FRAMINGHAM, MA0109850018 cfsp68 · normal
- ASSABET RIVER AT MAYNARD, MA01097000131 cfsp79 · above normal
- SUDBURY RIVER AT ASHLAND, MA0109748032 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 35 | 0 | 0/5 | p62 |
| 2026-10-18 | 35 | 0 | 0/5 | p68 |
| 2026-10-17 | 35 | 0 | 0/5 | p68 |
| 2026-10-16 | 35 | 0 | 0/5 | p71 |
| 2026-10-15 | 103 | 0 | 0/5 | p77 |
| 2026-10-14 | 103 | 0 | 0/5 | p82 |
| 2026-10-13 | 103 | 0 | 0/5 | p77 |
| 2026-10-12 | 103 | 0 | 0/5 | p78 |
| 2026-10-11 | 103 | 0 | 1/5 | p35 |
| 2026-10-10 | 103 | 0 | 1/5 | p46 |
| 2026-10-09 | 103 | 0 | 1/5 | p52 |
| 2026-10-08 | 103 | 0 | 0/5 | p53 |
| 2026-10-07 | 103 | 0 | 0/5 | p54 |
| 2026-10-06 | 103 | 0 | 0/5 | p66 |
Top water assets
- 65Hopkinton State Park Swimming Pool Damreservoir
- 65Barefoot Brook Damreservoir
- 65Grist Mill Damreservoir
- 65Framingham Reservoir No. 2 Damreservoir
- 65Lester G. Ross Damreservoir
- 65Nagog Pond Damreservoir
- 65Curve Street Damreservoir
- 65Snake Brook Damreservoir
- 65Assabet River At Maynard, Mariver
- 65Mill Pond Damreservoir