Outlet Connecticut River HUC8 01080205
A 2,809 km² sub-basin of the New England region in CT, MA. 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
79
Healthy
Drought index
41
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 9 reporting
Median flow
206%
p75 of record
Water assets
4,876
8 springs · 2,034 wells
USGS gauges (11)
- BROAD BROOK AT BROAD BROOK, CT0118449010 cfsp27 · normal
- CONNECTICUT RIVER AT THOMPSONVILLE, CT011840003,740 cfsp32 · normal
- STONY BROOK NEAR WEST SUFFIELD, CT011841002 cfsp61 · normal
- HOCKANUM RIVER NEAR EAST HARTFORD, CT0119250069 cfsp68 · normal
- EIGHTMILE RIVER AT NORTH PLAIN, CT0119400011 cfsp75 · normal
- SALMON RIVER NEAR EAST HAMPTON, CT0119350045 cfsp76 · above normal
- COGINCHAUG RIVER AT MIDDLEFIELD, CT0119288315 cfsp77 · above normal
- EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CT0119450014 cfsp83 · above normal
- NORTH BRANCH PARK RIVER AT HARTFORD, CT0119100015 cfsp88 · above normal
- MATTABESSET RIVER AT ROUTE 372 AT EAST BERLIN0119270419 cfsno long-term record
- CONNECTICUT RIVER AT MIDDLE HADDAM, CT0119305021,000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 41 | 0 | 0/9 | p75 |
Top water assets
- 73Hartford Basin Deep Fossil Aquifer — Central Connecticutfossil_water
- 73Early Mesozoic Basin Aquifer — Hartford Basinaquifer
- 66Higganum Reservoir Damreservoir
- 66Hockanum Reservoir Damreservoir
- 66Globe Hollow Reservoir Damreservoir
- 66Burnt Hill Flood Control Damreservoir
- 66Hallmere Reservoir Damreservoir
- 66Hartford Reservoir #1 Damreservoir
- 66Kenmere Reservoir Damreservoir
- 66Hartford Reservoir #2 Damreservoir