🌱 Environment

Lisbon Drainage Master Plan Sensors

Lisbon's first drainage tunnel — 4.6km from Campolide to Santa Apolónia — had its boring completed in July 2025, part of a €250M drainage master plan that also includes a 17,000m3 retention basin; a second, delayed Beato tunnel is now due in 2029. Since 2023 a separate pilot network of ten flood/flow sensors, including one at Alcântara, has tracked water levels in flood-prone road tunnels.

In build 📅 since 2022

🤖 AI-generated summary of the sources below — how this works · 🔎 Last verified 2026-08-02

🌱 Environment Flood resilience Sensors & IoT

🎓 Lesson

A drainage master plan on paper is not drainage in the ground — even a well-funded flagship climate-adaptation project has slipped years past its own deadlines.

Scale🏙️ City-wide

Cost≈€250M (PGDL total; EIB loans, EU grants sought)

FundingEuropean Investment Bank loans; EU grants pending

📖 Terms in this entry: Adaptive traffic signals · Digital twin · LoRaWAN

Sources

↗ Câmara Municipal de Lisboa — Plano Geral de Drenagem (authority)Official project page on the drainage tunnels.

↗ ECO / Diário Económico (press)Confirms 4.6km tunnel, €250M total budget, 17,000m3 retention basin, EIB financing.

↗ Público (press)April 2026: second Chelas-Beato tunnel now expected 2029, not 2027.

↗ Diário de Notícias (press)Confirms the 10-sensor flood/flow pilot (Feb-Mar 2023) with startup Heliotics, including a sensor at Alcântara.

This overview was generated with AI from the public sources listed above and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

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Compare this project

🇩🇰 Copenhagen's Cloudburst Management Plan · Copenhagen Two climate-adaptation megaprojects behind schedule — Copenhagen's since its 2011 flood, Lisbon's Beato tunnel now delayed to 2029. 🇩🇪 Smart Flood Monitoring & Forecast · Frankenberg (Eder) Frankenberg's sensors are built to alert citizens by SMS within seconds; Lisbon's ten flood sensors since 2023 feed staff, not the public. 🇭🇳 Río Choluteca Real-Time Flood Sensor Network (Sistema de Alerta Temprana) · Tegucigalpa Contrast in scale: Lisbon's plan carries a EUR250M budget for tunnels alone, Tegucigalpa's laser sensors cover 4 of roughly 80 flood points.

Explore the wider context

📟 A Reading Is Not a Decision 🌊 Flood resilience guide 🏙️ Lisbon city profile 🌱 Environment projects

📎 Cite this project

1001 Smart Cities (2026). “Lisbon Drainage Master Plan Sensors” — Lisbon, Portugal. The Smart City Atlas. https://1001smartcities.org/projects/lisbon-drainage-control/ (last verified 2026-08-02). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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