FloodZoneMap.org

Flash Flood — Belknap, NH

Sep 16, 1999

A southeast flow of tropical moisture developed over New Hampshire late Wednesday, September 15 as Hurricane Floyd moved slowly northeastward along the East Coast of the United States. The rains became heavier on Thursday and Thursday night as the remnants of Floyd moved toward and into New England. By early Friday morning, the remnants of Floyd were centered over southeastern New Hampshire. As the storm continued to move to the northeast, precipitation tapered to scattered showers in souther

Source: NOAA National Weather Service Storm Events Database (event 5717343). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Belknap, NH

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

View Belknap County flood data →

More Flood Stories

Flash Flood1 death$700K damage

Belknap, NH · Aug 7, 2008

An area of slow moving showers and thunderstorms produced up to 6 inches of rain in 3 hours resulting in flash flooding on Ames Brook in Ashland which rose rapidly and flooded the Ames Brook Campground.

Read the full account →
Tropical Storm1 death

Belknap, NH · Aug 28, 2011

Hurricane Irene made landfall across western Long Island, NY and was downgraded to a Tropical Storm as it moved into and through New England. The center of Irene was located just to the southwest of New Hampshire at 5 pm Sunday evening August 28 and then travelled up the…

Read the full account →
Flash Flood$40K damage

Belknap, 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$25K damage

Belknap, NH · Jul 30, 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 →