Mauá Wall
Mauá Wall (Portuguese: Muro da Mauá) is a flood protection structure located between Mauá Pier and Mauá Avenue, in the Historic Center of Porto Alegre, Rio Grande do Sul.[1]
The reinforced concrete wall is three meters high and 2,647 meters long. It has a three-meter-deep anchored wall foundation to help prevent underground percolation, and it is part of a flood protection system consisting of 68 km of external and internal dikes, 14 metal gates and 19 pump houses.[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 floodgates 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[edit]
In addition to the wall, the system has macro-drainage channels (such as Deluge and 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.