MERRIMACK RIVER AT NASHUA, NH
Is MERRIMACK RIVER AT NASHUA, NH flooding right now?
No — MERRIMACK RIVER AT NASHUA, NH is at 4.62 ft, 13.4 ft below its 18 ft flood stage, as of 74 min ago.
Gauge height
4.62 ft
Streamflow
—
Minor flooding here begins at 18 ft, with major flooding at 35 ft. The highest crest on record was 41.3 ft on Fri, Mar 20, 1936.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 16 ft | 11.4 ft below |
| Minor flood | 18 ft | 13.4 ft below |
| Moderate flood | 26 ft | 21.4 ft below |
| Major flood | 35 ft | 30.4 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 41.3 ft | 1936-03-20 |
| 30.5 ft | 1938-09-23 |
| 26 ft | 2006-05-15 |
| 23.5 ft | 2007-04-17 |
| 22.4 ft | 1987-04-07 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| BEAVER BROOK AT NORTH PELHAM, NH | 4.7 mi | Rockingham County |
| SOUHEGAN RIVER AT MERRIMACK, NH | 7.2 mi | Hillsborough County |
| NISSITISSIT RIVER AT PEPPERELL, MA | 9.3 mi | Middlesex County |
| NASHUA RIVER AT EAST PEPPERELL, MA | 9.4 mi | Middlesex County |
| MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA | 10.9 mi | Middlesex 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.