An easy roadside waterfall overlook at a state park with TVA dam-controlled flow, no swimming, and leashed dogs allowed.
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Based on this listing's approximate location — see the note on coordinates below.
Twin Falls is viewed from an easy overlook at the end of Powerhouse Road at Rock Island State Park in Warren County. The waterfall’s flow is entirely controlled by TVA’s Great Falls Dam upstream, making water releases unpredictable. Check the dam’s discharge schedule in advance for reliable viewing of flow.
Swimming and wading are prohibited downstream of the powerhouse at all times. Dogs are allowed on leash. No climbing or adventurous activities are permitted. The site offers parking, benches, a kiosk, and observation area for roadside viewing.
Any time; flow depends on TVA Great Falls Dam release schedule.
Under 30 minutes
You want to swim or wade; swimming is prohibited at all times.
No fee or permit requirement was published on the managing agency's site when we last checked — confirm current conditions before you go, since these change.
The managing agency's page (linked below) has the current trailhead and route details — round-trip distance wasn't published when we checked.
Yes, per the managing agency's own page — but check current leash rules before you go.
No — the managing agency's page states swimming/wading is not permitted here, often for safety reasons (current, rockfall, or cold water).
We track 13 waterfalls in Cumberland Plateau TN.
There is 1 other waterfall we track in Warren County. All Cumberland Plateau TN waterfalls →
tnstateparks.com
tnstateparks.com official park page, checked Sept 2026. Viewed from the Twin Falls Overlook at the end of Powerhouse Road (parking, benches, kiosk, observation area — no hiking trail needed). Page states swimming/wading is 'not permitted downstream of the Powerhouse at any time, regardless of water releases.' Park warns of irregular TVA dam water releases; check TVA's Great Falls Dam schedule before visiting. Official page does not give a height figure.
Checked September 2026.