Mauá Wall (Portuguese: Muro da Mauá) is a flood wall in the Historic Center of Porto Alegre, Rio Grande do Sul.[1]
The reinforced concrete wall is located between Mauá Wharf and Mauá Avenue. It is 2,647 meters long, three meters high and it has a three-meter-deep anchored wall foundation, to help prevent underground percolation. It is part of a flood protection system consisting of 68 km of external and internal dikes, 14 metal gates and 19 pumping stations.[2] The wall represents only 4% of the protective dikes' width and is located along the Navegantes Canal, a part of the Jacuí River Delta. The wall was finished in 1974.
The system was built in order to avoid catastrophe similar to the flood of 1941. The coupures had to be closed at various times after their construction.[3][4]
As an alternative to the permanent wall, a modular stoplog system based on bleachers has been proposed.[5]
Flood protection system
editIn addition to the wall, the system has macro-drainage channels (such as Arroio Dilúvio and Arroio Cavalhada streams) and dikes set up under Beira-Rio (to the south) and Presidente Castello Branco avenues (to the north).[6][7] The pump houses (with 83 pumps capable of pumping 159,000 L/s) are located at specific points in the city to move flood water to Guaíba Lake and Gravataí River.[8]
References
edit- ^ Clayton (4 May 2024). "Chuva no RS: Guaíba chega a 4,88 metros e atinge o maior nível de sua história". Nitro News Brasil (in Brazilian Portuguese). Retrieved 4 May 2024.
- ^ "Muro da Mauá" (in Brazilian Portuguese). Prefeitura Municipal de Porto Alegre. Archived from the original on 23 October 2022. Retrieved 7 May 2019.
{{cite web}}: CS1 maint: bot: original URL status unknown (link) - ^ ZERO HORA (21 October 2016). "Guaíba já registra quarta maior cheia desde 1941". GaúchaZH (in Brazilian Portuguese). Archived from the original on 19 April 2023. Retrieved 7 May 2019.
{{cite web}}: CS1 maint: bot: original URL status unknown (link) - ^ "Guaíba volta a subir e atinge maior nível desde 1941 em Porto Alegre". Rio Grande do Sul (in Brazilian Portuguese). 12 October 2015. Archived from the original on 13 May 2024. Retrieved 7 May 2019.
- ^ Malinoski, André (29 June 2022). "Muro da Mauá poderá ser substituído por proteção móvel contra enchentes do Guaíba; veja os modelos e como funcionaria". GZH (in Brazilian Portuguese). Archived from the original on 29 April 2023. Retrieved 13 May 2024.
- ^ GUIMARAENS, Rafael (2015). Águas do Guaíba. Porto Alegre: Libretos. pp. 216 p.
- ^ "Porto Alegre protegida contra enchentes como a de 1941". Prefeitura de Porto Alegre. Retrieved 7 May 2019.
- ^ "Porto Alegre protegida contra enchentes como a de 1941". Prefeitura de Porto Alegre. Retrieved 7 May 2019.
External links
edit
Geographic data related to Mauá Wall at OpenStreetMap
