Gizmo Isle
Near the lakeA named island on the lake near Rockwood, best known as the home of Gizmo Jam, the lake's annual on-island concert.
Gizmo Isle is a small named island on Watts Bar Lake near New Hope Road in Rockwood. Most of the year it sits quiet, with no active management and open access by water. Once a year it hosts Gizmo Jam, a daylong on-island concert that brings the lake's social calendar to one of its most distinctive settings, with a stage on the island and the audience anchored or rafted up around it.
Gizmo Jam has historically run on Memorial Day weekend. For 2026 the date is Saturday, May 23. Set the date now if you want to be in the cove for it. The lineup, ticketing if any, and arrival logistics are posted on the event's Facebook page, which is the most reliable place to track changes: https://www.facebook.com/share/1DVHBVQL2h/
If you know Gizmo Isle outside of the festival, anchorage conditions, swim spots, what the rest of the year is like on it, drop us a note via the correction link below and we'll fold it into the guide.
Tips
- The 2026 Gizmo Jam date is Saturday, May 23. The annual on-island concert is the reason most people end up at Gizmo Isle.
- The current Facebook page is the live source for date confirmation, lineup, and arrival logistics: https://www.facebook.com/share/1DVHBVQL2h/
- Memorial Day weekend is the historical pattern, so plan around late May rather than the late-summer assumption.
- Outside of the festival the island sits quiet, and an anchorage or paddle stop on a regular weekend is unmanaged and uncrowded.
What to know
- Access by water; no active management on the island most of the year.
- The island's main draw is the annual Gizmo Jam concert; check the Facebook page for current dates and details.
- Public information on the rest of the island is thin. If you know it well, send a note via the correction link below.
First visit
By boat. The island is on Watts Bar Lake near New Hope Road in Rockwood. For Gizmo Jam specifically, follow the event's Facebook page for arrival and anchoring guidance.
Location
Frequently asked
When is Gizmo Isle open?
Gizmo Jam annually anchors the calendar on Memorial Day weekend; the 2026 date is Saturday, May 23. Confirm via the event Facebook page before planning: https://www.facebook.com/share/1DVHBVQL2h/
How do I get to Gizmo Isle?
By boat. The island is on Watts Bar Lake near New Hope Road in Rockwood. For Gizmo Jam specifically, follow the event's Facebook page for arrival and anchoring guidance.
What should I know before visiting Gizmo Isle?
Access by water; no active management on the island most of the year.
Last updated: April 30, 2026