RIVER GAUGE · MAHWAH RIVER
Mahwah River at Suffern
Rockland County, New York
Water level1.72 ft
Flow8 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action4.5 ft
Minor flood5 ft
Moderate flood7 ft
Major flood10.5 ft
The past week
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What floods at each level
- 10.6 ft
Major flooding along Mahwah River at Suffern. 8 feet of waters into homes basements. Major flooding in homes in the Squires Gate community along the Mahwah River, especially on Lonergan Drive.
- 7 ft
Moderate flooding along Mahwah River at Suffern communities. Moderate flooding in homes in the Squires Gate community along the Mahwah River, especially on Lonergan Drive.
- 5 ft
Minor flooding on homes along the Mahwah River at Suffern. Minor flooding in homes in the Squires Gate community along the Mahwah River, especially on Lonergan Drive.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Sep 15, 1999 | 9.7 ft | — |
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