RIVER GAUGE · MONGAUP RIVER
Mongaup River at Mongaup Valley
Sullivan County, New York
Water level3.19 ft
Flow70 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action12 ft5,800 cfs
Minor flood14 ft8,000 cfs
Moderate flood14.7 ft8,900 cfs
Major flood15 ft14,000 cfs
The past week
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What floods at each level
- 12 ft
Minor Field Flooding Begins
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Aug 18, 1955 | 15.22 ft | 16,100 cfs |
| Apr 2, 2005 | 13.47 ft | 7,630 cfs |
| Mar 28, 2005 | 12.8 ft | — |
Get an alert when Mongaup River rises
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