Flood — Merrimack, New Hampshire

2025-05-31 · near Davisville, Merrimack, New Hampshire

Event narrative

Heavy rain up to 3 inches caused overland flooding on Tyler and Gerish Rd. in Contoocook.

Wider weather episode

Strong low pressure system brought widespread soaking rains to the region, with most areas total rainfall amounts generally 1-1.25, with locally higher amounts in southern and central New Hampshire. A pivot point of the storm system occurred between Milford and Contoocook, resulting in rainfall amounts between 2 to 4 inches. This caused a handful of road closures due to flooding as antecedent rainfall over the past month allowed for saturated soils.

View location on OpenStreetMap → (43.2700, -71.7000)

Source: NOAA Storm Events Database, event_id 1268158. Narrative written by the NWS forecast office that issued the report.