Automated Waterlogging Monitoring & Early-Warning System
This overview was generated with AI from the public sources listed below 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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Tianjin's flood sensors read water depth every 5 minutes, city-wide. In 2023 that caught 54 cm pooling near a mall in time to drain it within the hour — in 2024, a smaller 5–9 cm reading was enough to trigger traffic control.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 5 more in Tianjin · 🌊 Flood resilience guide · 🌱 Environment projects
Tianjin's Emergency Public Event Warning Information Release Center has run a citywide automated waterlogging monitoring and early-warning system since 2017, fusing meteorological radar and rain-gauge data with dedicated water-depth sensors that report every 5 minutes at 0.1 cm precision from streets, underpasses and, since September 2022, 19 devices across the metro network's 9 lines. It is a coordination layer feeding the water authority, meteorological bureau, traffic and emergency-management departments and Tianjin Metro, not a single-agency tool. During Typhoon Doksuri on 27 July 2023, the system detected 54 cm of standing water near a Hexi district shopping mall in time for the water authority to clear it within an hour; on 22 April 2024 it detected 5–9 cm of pooling across multiple districts and triggered coordinated inter-agency traffic-control measures.
📊 Impact
Documented triggers: 54 cm of standing water detected near a Hexi district shopping mall during Typhoon Doksuri (27 July 2023), drained within an hour of the alert; 5–9 cm of pooling detected across multiple districts on 22 April 2024, which triggered coordinated inter-agency traffic-control measures. Self-reported by the operating centre; no independent audit was found.
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📎 Cite this project
1001 Smart Cities (2026). “Automated Waterlogging Monitoring & Early-Warning System” — Tianjin, China. The Smart City Atlas. https://1001smartcities.org/projects/tianjin-waterlogging-warning-system/ (last verified 2026-08-02). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.