FloodZoneMap.org

Flash Flood — Lewis, NY

Oct 7, 2023

A cold front and pre-frontal trough slowly crossing the area stalled over the Eastern Lake Ontario area. As the front stalled, a few bands of heavy rain developed along the front as an influx of moisture moved in ahead of and along the front. This resulted in flash flooding overnight in southern Lewis County. Some of the highest rainfall amounts from this event, all from Lewis County, included 3.20 at Chases Lake; 3.14 at Croghan; and 2.11 near Glenfield.

Source: NOAA National Weather Service Storm Events Database (event 1145355). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Lewis, NY

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

View Lewis County flood data →

More Flood Stories

Flood$10K damage

Lewis, NY · Aug 19, 2021

The remnants of Tropical Storm Fred were forecast to move across the region. Out ahead of the remnants of Fred, a slow-moving frontal zone and tropical moisture spreading north ahead of Fred allowed for a pre-cursory heavy rainfall event on August 17.

Read the full account →
Flash Flood$1.5M damage

Lewis, NY · May 22, 2014

A weak surface low drifted across the North Country and produced slow moving thunderstorms. The thunderstorms produced three-quarter inch hail near Turin and Port Leyden.

Read the full account →
Flood$1.1M damage

Lewis, NY · Apr 28, 2011

After near record-setting spring rainfall, a warm front brought two to four inches of rain to the eastern Lake Ontario Region. The runoff resulted in flooding across the Black River basin, including the Black River and some of its major tributaries.

Read the full account →
Flood$75K damage

Lewis, NY · Apr 15, 2014

A harsh winter built a much above normal snow pack in the Black River basin and this snow pack contributed significantly to flooding in that region. At the beginning of the month, snow water equivalent averaged about twice the normal value on the Tug Hill.

Read the full account →