Souhegan River at Merrimack
Flood levels
Official flood levels at this gauge: action stage begins at 8.0 ft; minor flooding begins at 9.0 ft; moderate flooding begins at 11.0 ft; major flooding begins at 13.0 ft.
| Action stage | 8.0 ft |
|---|---|
| Minor flooding | 9.0 ft |
| Moderate flooding | 11.0 ft |
| Major flooding | 13.0 ft |
Highest recorded crests
- 16.2 ft on Mar 19, 1936 (historic crest)
- 12.8 ft on Sep 21, 1938 (historic crest)
- 12.7 ft on Apr 17, 2007 (historic crest)
- 11.8 ft on Apr 8, 1924 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 9.0 ft | Flooding of low lying areas along the river begins in the town of Merrimack. |
|---|---|
| 10.0 ft | In Merrimack, several homes along a small portion of Beacon Drive begin to flood. In Amherst, low lying areas begin to flood. |
| 11.0 ft | In Merrimack, homes in the Beacon Drive area flood. Other low lying areas upstream into Amherst and Milford flood. |
| 13.0 ft | Significant flooding affects homes in the area of Beacon Drive in Merrimack. Other low lying sections upstream into Amherst and Milford experience flooding. |
Forecast office: NWS Gray · River Forecast Center: Northeast River Forecast Center.
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Nearby stations and gauges
- Merrimack River at Goffs Falls NWS gauge · 6.6 mi
- Merrimack River at Nashua NWS gauge · 7.3 mi
- Beaver Brook at North Pelham NWS gauge · 9.3 mi
- Souhegan River at Milford NWS gauge · 10.2 mi
- Piscataquog River at Goffstown NWS gauge · 11.2 mi
- South Branch Piscataquog River near Goffstown NWS gauge · 12.8 mi