RIVER GAUGE · PEMIGEWASSET RIVER
Pemigewasset River at Plymouth
Grafton County, New Hampshire
Water level0.68 ft
Flow225 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action10 ft13,100 cfs
Minor flood13 ft18,200 cfs
Moderate flood18 ft29,800 cfs
Major flood21 ft38,100 cfs
The past week
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What floods at each level
- 22 ft
Flood waters 5 to 6 feet deep on route 175A in Holderness.
- 20.1 ft
Flood waters rise to the doors of the PSU physical education center and the PSU ice arena.
- 18 ft
South River Road and Avery Street flood in Holderness.
- 15.5 ft
Flood waters over the road at the Irving station on route 175A in Holderness.
- 15 ft
Flood waters up to the road at the Irving station on route 175A in Holderness.
- 14 ft
Water enters the parking lot behind the PSU ice arena.
- 13 ft
Minor lowland flooding begins.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Mar 18, 1936 | 29 ft | 65,400 cfs |
| Nov 3, 1927 | 27.4 ft | 60,000 cfs |
| Sep 20, 1938 | 23.62 ft | 50,900 cfs |
More on Pemigewasset River
UpstreamPemigewasset River at Woodstock
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