Upper Ammonoosuc River near Groveton, NH
Is Upper Ammonoosuc River near Groveton, NH flooding right now?
Upper Ammonoosuc River near Groveton, NH measured 2.35 ft on 2026-09-11 01:30:00 UTC. That observation was 5.2 ft below its 7.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
2.35 ft
Streamflow
244 cfs
Minor flooding here begins at 7.5 ft, with major flooding at 10 ft. The highest crest on record was 12.01 ft on Tue, May 20, 1969.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 6.5 ft | 4.2 ft below |
| Minor flood | 7.5 ft | 5.2 ft below |
| Moderate flood | 9 ft | 6.7 ft below |
| Major flood | 10 ft | 7.7 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 12.01 ft | 1969-05-20 |
| 9.44 ft | 1953-03-27 |
| 9.01 ft | 1954-04-23 |
| 8.97 ft | 1998-03-31 |
| 8.91 ft | 2002-04-14 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Connecticut River at North Stratford, NH | 11.7 mi | Coos County |
| Androscoggin River below Bog Brook at Cambridge NH | 14.4 mi | Coos County |
| Androscoggin River near Gorham, NH | 18.9 mi | Coos County |
| Connecticut River near Dalton, NH | 19.3 mi | Coos County |
| Moose River at Victory, VT | 19.7 mi | Essex County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.