Northern Long Island HUC8 02030201
A 751 km² sub-basin of the Mid-Atlantic region in NY. 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
77
Healthy
Drought index
5
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 2 reporting
Median flow
95%
p54 of record
Water assets
1,944
5 springs · 1,878 wells
USGS gauges (3)
- COLD SPRING BROOK AT COLD SPRING HARBOR NY013035002 cfsp32 · normal
- MILL NECK CREEK AT MILL NECK NY013030009 cfsp76 · above normal
- ALLEY CREEK NEAR OAKLAND GARDENS NY013020503 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 5 | 0 | 0/2 | p54 |
Top water assets
- 65Sunken Meadow Creekriver
- 65Sunken Meadow Creekriver
- 65Millers Pond Damreservoir
- 65Fresh Pond Damreservoir
- 65Alley Creek Near Oakland Gardens Nyriver
- 65Wading Riverriver
- 65Mill Pond Damreservoir
- 65Lefferts Grist Mill Damreservoir
- 65Mill Neck Creek At Mill Neck Nyriver
- 65Nissequogue Riverriver