FloodZoneMap.org

Flood — Merrimack, NH

Jul 3, 2023

The first of many rounds of rain moved into the state by daybreak on July 2nd. Periods of moderate to heavy rain continued through most of the day before ending by evening. Most areas of the state received 1 to 2��� of rain, with the heaviest rain corridor occurring across the Seacoast region of Rockingham and Strafford Counties where 2 to 3������ of rainfall occurred.

Source: NOAA National Weather Service Storm Events Database (event 1124082). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Merrimack, NH

This event is one of many recorded floods in Merrimack County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Merrimack County flood data →

More Flood Stories

Flood$25K damage

Merrimack, NH · Dec 23, 2022

Beginning on December 22nd a powerful storm was developing over the Ohio River Valley. On December 23rd the center of the storm was deepening rapidly (974mb) as it lifted through the eastern Great Lakes.

Read the full account →
Flash Flood$35K damage

Merrimack, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

Read the full account →
Flash Flood$20K damage

Merrimack, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

Read the full account →
Flash Flood$20K damage

Merrimack, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

Read the full account →