A 75-foot waterfall into a natural swimming pool, reached through a gorge that closes whenever the weather turns.
March through May
Big water window
in a typical year
Rain fed
What drives it
Blackburn Fork State Scenic River
Climatology
Data on this page
Blackburn Fork State Scenic River is ungauged
Tennessee State Parks
Managed by
their rules govern
Trail status, closures and safety rules belong to each falls' managing agency, named and linked on every page.
The season
What fills Cummins Falls, and when
Blackburn Fork is a flashy plateau stream. The falls itself is dependable in spring; access to the base is not, because the gorge is prone to flash flooding and the park closes it on short notice.
Typical best flow: March through May
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What the agency itself says
The park\u2019s namesake, Cummins Falls, is a breathtaking 75-foot waterfall that plunges into a natural swimming pool.
Rain-fed falls carry the color of their watershed: Blackwater Falls runs amber with tannin from spruce and hemlock bogs upstream, and its volume tracks the last month of Appalachian weather. “Blackwater Falls (15437499241)” by Benjamin Smith from United States, CC BY 2.0
Getting there
Access, in the agency's words and ours
A Gorge Access Permit is required to reach the base, and the base is only accessible on fair-weather days.
Pictured: Cumberland Falls, Kentucky. Cummins drops into a swimming hole reached only by a permitted gorge walk. “Cumberland Falls rainbow” by James St. John, CC BY 2.0
Common questions
Cummins Falls flow season FAQ
The reliable big-water window is March through May. Blackburn Fork is a flashy plateau stream. The falls itself is dependable in spring; access to the base is not, because the gorge is prone to flash flooding and the park closes it on short notice.
Blackburn Fork State Scenic River has no USGS gauge near the falls, so the seasonal pattern above is the flow guide for Cummins Falls, and Cummins Falls State Park (Tennessee State Parks) is the source for current conditions on the ground.
It thins in dry weather. More to the point, the base can be closed entirely when rain is in the forecast.
Cummins Falls State Park (Tennessee State Parks). A Gorge Access Permit is required to reach the base, and the base is only accessible on fair-weather days. Trail status, closures and safety rules are theirs, and their page is linked on this one; nothing here overrides what they publish.
In their own words: "The gorge is prone to flash flooding. Changes in water levels in the gorge can result in the sudden closure of trail access to the base of the falls." That sentence is Cummins Falls State Park (Tennessee State Parks)'s, quoted verbatim, and their page is the place to check before you go.
Yosemite Falls in May, running on snowmelt that will be gone by late summer. The National Park Service tells visitors the falls can be dry by August, which is why every falls page here starts from its watershed. “Tourists below Yosemite Falls (39832011431)” by Mike McBey, CC BY 2.0
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 Cummins Falls State Park (Tennessee State Parks). National picture: waterfall season across the US → Hero image: “Cumberland Falls rainbow” by James St. John, CC BY 2.0
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