Flood in Cortland County, New York

Excessive rainfall created a significant rise and subsequent flooding along the Tioughnioga River near Cortland, NY. The streamgage crested at 10.37 feet during the afternoon of April 1st. The river exceeded the Moderate flood stage which is 10 feet. The main road between Cortland and Marathon was flooded and closed for hours.

April 2026 was a wet month for much of Central NY (CNY), especially around the Finger Lakes region, as precipitation was 150%-200% of normal. Several reports of river flooding occurred during the first couple of days of the month due to heavy rainfall. Owasco and Onondaga Lakes also reported flooding early in the month, while Cayuga Lake at Ithaca was at or above flood stage for much of the month of April. Moderate and major flooding occurred on the inlet to Owasco Lake and along the Tioughnioga River.