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Genesee River at Wellsville

National Weather Service gauge WLLN6 · New York · Allegany County · 42.1222, -77.9572 · USGS 04221000

Flood levels

Official flood levels at this gauge: action stage begins at 9.0 ft; minor flooding begins at 11.0 ft; moderate flooding begins at 14.0 ft; major flooding begins at 17.0 ft.

Action stage9.0 ft
Minor flooding11.0 ft
Moderate flooding14.0 ft
Major flooding17.0 ft

Highest recorded crests

What the water does

National Weather Service impact statements for this gauge, in the Weather Service's own words.

9.0 ftAction stage, high flows. No flooding.
11.0 ftFlood stage, banks overflow and begin to flood lowlying areas outside the levees in places such as Scio. Minor damages.
14.0 ftModerate flood, general flooding along the river in lowlying areas throughout Allegany County. Some residential and commercial damages. The levee protects most of Wellsville.
17.0 ftMajor flood, major flooding all along the Genesee River throughout Allegany County. Commercial and residential damages. Road closures. Levee continues to protect most of Wellsville to 19.9 feet.
20.0 ftExtreme flood, levee is topped at 19.9 feet. Widespread flooding along the river throughout Allegany County. Heavy residential damages including Wellsville. Evacuations necessary.

Forecast office: NWS Buffalo · River Forecast Center: Northeast River Forecast Center.

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