Niagara Falls
Flow controlledThe most famous falls on the continent runs on a 1950 treaty: 100,000 cfs must come over during tourist season daytime hours, half that the rest of the time, with the balance sent to power plants.
The foaming staircase cascade that names its park, tumbling toward Cayuga Lake beside a gorge trail of stone steps, fullest in the runoff months.
Trail status, closures and safety rules belong to each falls' managing agency, named and linked on every page.
Buttermilk Creek is a small drainage, so the famous foam is a spring phenomenon first: snowmelt and rain keep the cascade churning from mid March into June, after which it relaxes to a gentler slide. Our window is editorial; the park page describes the cascade and its natural pool.
Typical best flow: Mid March through mid June
Buttermilk Falls State Park takes its name from the foaming cascade formed by Buttermilk Creek as it flows down the steep valley side toward Cayuga Lake.


The gorge trail climbs roughly 600 feet on stone steps beside the cascade, which the park rates difficult for some visitors; the natural swimming area below operates only when conditions and staffing allow, as the park's swimming notice says.
Current access and closures: Buttermilk Falls State Park (New York State Parks).


The most famous falls on the continent runs on a 1950 treaty: 100,000 cfs must come over during tourist season daytime hours, half that the rest of the time, with the balance sent to power plants.
A 215 foot single plunge past 400 foot gorge cliffs near Ithaca, taller than Niagara, biggest with the Finger Lakes spring runoff and thin by late summer.
Nineteen waterfalls in one walkable mile of stone stairways and tunnels, with a season set as much by the trail calendar as by the creek.
New York's tallest waterfall by the DEC's own account, a 260 foot two-tier drop in the Catskills painted by the Hudson River School and treated with respect by everyone who reads the DEC's warnings.
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Things to doGuided trips and experiences from local operators.
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Places to stayVacation rentals and cabins close to the water.
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Flow windows are typical-year climatology drawn from the driver and the agency language quoted above, not forecasts. Live readings and per-date percentiles are U.S. Geological Survey data, public domain; the above-or-below-typical line is our comparison and is labelled as such. Access, trail and safety information belongs to Buttermilk Falls State Park (New York State Parks). National picture: waterfall season across the US →
Hero image: “Looking Glass Falls, North Carolina, April 2025” by Bill McMannis, CC BY 2.0