Oswegatchie HUC8 04290003
A 2,720 km² sub-basin of the Great Lakes region in NY. Drought coverage is from the US Drought Monitor; streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
73
Moderate
Drought index
—
—
Area in D2+
—
Gauges below normal
0%
of 2 reporting
Median flow
252%
p81 of record
Water assets
792
0 springs · 54 wells
USGS gauges (2)
- OSWEGATCHIE RIVER NEAR HEUVELTON NY042630001,920 cfsp81 · above normal
- WEST BRANCH OSWEGATCHIE RIVER NEAR HARRISVILLE NY04262500747 cfsp81 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | — | — | 0/2 | p81 |
| 2026-10-17 | — | — | 0/2 | p80 |
| 2026-10-16 | — | — | 0/2 | p78 |
| 2026-10-15 | — | — | 0/2 | p62 |
| 2026-10-14 | — | — | 0/2 | p39 |
| 2026-10-13 | — | — | 2/2 | p12 |
| 2026-10-12 | — | — | 2/2 | p13 |
| 2026-10-11 | — | — | 2/2 | p14 |
| 2026-10-10 | — | — | 2/2 | p15 |
| 2026-10-09 | — | — | 2/2 | p15 |
| 2026-10-08 | — | — | 2/2 | p15 |
| 2026-10-07 | — | — | 2/2 | p17 |
| 2026-10-06 | — | — | 2/2 | p18 |
| 2026-10-05 | — | — | 1/2 | p20 |
Top water assets
- 67Middle Branch Oswegatchie Riverriver
- 66Browns Fallsreservoir
- 66Benson Mines Plant Damreservoir
- 66Flat Rockreservoir
- 66South Edwardsreservoir
- 66Hollow Damreservoir
- 66Newton Falls Stabilization Pond #4 Damreservoir
- 65Ogdensburgreservoir
- 65Newton Falls Lowerreservoir
- 65Bassetts Creekriver