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.
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.
Trail status, closures and safety rules belong to each falls' managing agency, named and linked on every page.
Glen Creek drops 400 feet through the glen over 19 falls, and its water peaks with spring runoff. The paradox the park page spells out: the Gorge Trail opens in early May and typically closes mid October, so the biggest water of the year partly runs before you can walk beside it. Early season visits catch the best combination of flow and access.
Typical best flow: May through mid October, when the gorge opens
Within two miles, the glen's stream descends 400 feet past 200-foot cliffs, generating 19 waterfalls along its course. The gorge path winds over and under waterfalls and through the spray of Cavern Cascade.


The Gorge Trail with its 19 waterfalls opened May 9 for the 2026 season and typically closes mid October, per the park; the rim trails stay open year round but offer no waterfall access from November to May.
Current access and closures: Watkins Glen 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.
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.
Three major falls on the Genesee River in the Grand Canyon of the East, with the flow-setting dam conveniently DOWNSTREAM, so what comes over is the river's own weather.
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Things to doGuided trips and experiences from local operators.
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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 Watkins Glen 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