PGDL
Published 8 November 2026, 22:23
PGDL — Plano Geral de Drenagem de Lisboa (Lisbon general drainage plan)
The city's programme against flooding in heavy rain: Lisbon is relaying its storm drains and building two large tunnels that carry water from the hills straight into the Tagus, bypassing the old streets. One tunnel runs from Monsanto to Santa Apolónia, the other from Chelas to Beato. The câmara calls it the largest climate adaptation project in the European Union.
Where you come across it. News about street closures and works in central Lisbon; announcements of metro station closures.
The works are going ahead piecemeal and behind schedule: deadlines slip, and closures are announced shortly before they begin. Because of the tunnel works, Santa Apolónia metro station is closing for about ten months.