Long Island Sound HUC8 02030203
A 3,082 km² sub-basin of the Mid-Atlantic region in CT, NY, 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
1
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
144
0 springs · 6 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 1 | 0 | — | — |
Top water assets
- 65Bailey Creekriver
- 65East Riverriver
- 65Indian Riverriver
- 65East Riverriver
- 65Neck Riverriver
- 65Oyster Riverriver
- 65Poquonock Riverriver
- 65East Riverriver
- 65East Riverriver
- 65Briggs Brookriver