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Rio Grande do Sul flood alerts continue

Updated 11 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-01 23:04 UTC → 2026-08-16 13:16 UTC · added removed

In late July 2024 2024, the Brazilian Geological Service warned that the Guaíba River in Porto Alegre could reach the 2.60 m alert level and possibly the 3 m flood benchmark. River measurements on 29 July showed levels around 2.48‑2.54 2.48–2.54 m, prompting civil‑defence civil-defence authorities to raise the hydrological alert to orange and keep mobile command posts on the city’s islands. orange. Tributaries such as the Taquari, Caí, Gravataí Gravataí, and Sinos also exceeded local flood thresholds, and more than with over 100 residents remained displaced in towns like Taquara and Rolante. By 31 July 2024 2024, the Guaíba rose to 2.58 m at the Cais Mauá station, extending the orange alert to the Arquipélago neighbourhood and riverside districts of the South and Extreme South. districts. The nearby Rio dos Sinos surged to 6.93 m in Novo Hamburgo and 5.22 m in São Leopoldo. Authorities continued daily bulletins, urged residents to avoid low‑lying areas and maintained round‑the‑clock monitoring. A similar episode re‑emerged on 31 re-emerged in July 2026 when the 2026. The Guaíba again reached 2.58 m at Cais Mauá. The city’s Mauá, prompting the Defesa Civil kept the to maintain an orange hydrological warning, noting warning. Authorities noted that strong southern winds could cause brief spikes and localized flooding, especially on particularly in the Arquipélago district and the islands of Pintada, Marinheiros, Flores and in the Arquipélago district. Command posts remained on the islands, volunteer jeep crews were deployed, and bottled Flores. While water and animal feed were distributed. Water levels began a slow recession, streets stayed remained partially inundated, but no new evacuations were ordered. Residents were again advised to stay informed through official channels and inundated. In the surrounding region, the Rio Paranhana rose above 5.5 m, leading to avoid low‑lying zones the evacuation of over 50 residents in Taquara. Although a temporary shelter in the Association of Motorists was later deactivated as monitoring continued. levels fell, municipal teams remained on standby. In Porto Alegre, a vehicle was reported submerged in Lago Guaíba near the Ipanema waterfront, though no injuries were confirmed.

Versions

  1. 2026-08-16 13:16 UTC Rio Grande do Sul flood alerts continue
  2. 2026-08-01 23:04 UTC Rio Grande do Sul flood alerts continue
  3. 2026-07-31 23:04 UTC Rio Grande do Sul flood alerts continue
  4. 2026-07-31 20:38 UTC Rio Grande do Sul flood alerts continue
  5. 2026-07-31 16:55 UTC Rio Grande do Sul flood alerts continue
  6. 2026-07-31 16:55 UTC Rio Grande do Sul flood alerts and evacuations
  7. 2026-07-31 14:09 UTC Rio Grande do Sul flood evacuations
  8. 2026-07-31 00:04 UTC Rio Grande do Sul flood evacuations
  9. 2026-07-30 13:38 UTC Rio Grande do Sul flood evacuations
  10. 2026-07-30 10:57 UTC Rio Grande do Sul flood evacuations
  11. 2026-07-30 08:16 UTC Rio Grande do Sul flood evacuations
  12. 2026-07-30 01:39 UTC Rio Grande do Sul flood evacuations

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