Mori–Torbole Tunnel (Lake Garda Flood Relief): Status & Timeline

The Mori–Torbole Tunnel (Galleria Mori–Torbole) is a flood-diversion tunnel on Lake Garda, Italy, designed to discharge excess water from the lake into the Adige River during high-water events, preventing lakeshore flooding.

Current Status

• Under construction (main excavation by TBM "Garda" completed 2023).
• Expected completion: ~2030 (final lining, portals, electromechanical, testing).
• Length: ~10 km.
• Diameter: ~9 m (finished ~8.5 m).
• Capacity: 100 m³/s (reduces lake level ~1 cm/day at max flow).

Context

Lake Garda has no natural outlet capable of handling extreme inflows (Sarca River). The 1966, 2000, 2002 floods caused major damage. The tunnel is part of the Garda Flood Risk Management Plan (Provincia Autonoma di Trento / Veneto).

Once operational, it will be activated only when lake level exceeds 65.50 m a.s.l. (hydrographic zero).