L'Oros

L'Oros ; Açude-Oros reservoir
	Açude-Oros reservoir (2007)
Location:	State of Ceará , Brazil
Tributaries:	Rio Jaguaribe
Drain:	Rio Jaguaribe
	Ceará , Brazil
Coordinates	6 ° 14 ′ 20 ″ S , 38 ° 55 ′ 30 ″ W Coordinates: 6 ° 14 ′ 20 ″ S , 38 ° 55 ′ 30 ″ W
	Data on the structure
Construction time:	? –1962
Height of the barrier structure :	35-54 m
Building volume:	50 800 m³
Crown length:	620-670 m
	Data on the reservoir
Water surface	350 km²
Storage space	1.9-2.1 billion m³

The L'Orós - Dam (also Orós dam Portuguese Açude Orós or Açude Presidente Juscelino Kubitschek de Oliveira is) the dam of Açude-Oros dam in the northeastern Brazilian state of Ceará .

Oros Dam

The Oros Dam is located about 270 km south of the state capital Fortaleza near Orós in the Centro-Sul Cearense region. According to various sources, its height is specified as 35 or 54 m and, accordingly, the crown length as 620 to 670 m. The dam, with a volume of 50,800 m³, was completed in 1962. Since then it has been used to regulate the water on the Rio Jaguaribe and to generate electricity from hydropower . The Castanhão dam has been located a little downstream since 2003.

Dam accident

Before the completion of the Orós Dam and even during construction - on March 25 or 28, 1960 (but probably on March 25) - the dam broke, causing a tidal wave that killed around 1,000 people. The disaster happened during floods as a result of unexpectedly heavy rainfall. The dam was flooded and washed away. However, the failure of the structure could be predicted a few days in advance, and therefore the population could be warned that 100,000 people were saved.

Açude-Orós reservoir

According to various sources, the storage capacity of the Açude-Orós reservoir comprises 1.9 billion to 2.1 billion m³ of water. The surface is 350 km².

Web links

Victor Miguel Ponce: The Worker's Channel. Spillway at Oros dam and reservoir, Ceara, Brazil. In: ponce.sdsu.edu. Victor Miguel Ponce (English, picture of the flood relief system of the Oros dam).; accessed on June 7, 2020
Data and photo about dam and lake ( Memento from July 16, 2010 in the Internet Archive ) (Portuguese)
Mapa de Pontos d'Águas. Orós. In: cprm.gov.br. Companhia de Pesquisa de Recursos Minerais (CPRM), 1998, archived from the original on January 15, 2016 (Portuguese, map of the reservoir in the Orós municipality).; accessed on June 7, 2020

Individual evidence

^ Laos dam collapse: Worst dam disasters over the last 60 years. In: The Straits Times . July 24, 2018, accessed on March 25, 2020 (English): "Brazil: A thousand people die in March 1960 in the north-eastern state of Ceara when the Oros dam bursts."
↑ Maximilian Kling, Marco Baldauf, Stefan Böttger, Christof Nöh: Country profile for recycling and water management in Brazil. (PDF; 11.8 MB) Water resources. German RETech Partnership, p. 45 , accessed on June 7, 2020 : “The storage capacity of dams in Brazil is around 700 billion m³ (e.g. Castanhão Dam 6.7 billion m³, Armando Ribeiro Gonçalves Dam 2.4 Billion m³, Orós Dam 1.94 billion m³). "

[1] Laos dam collapse: Worst dam disasters over the last 60 years. In: The Straits Times . July 24, 2018, accessed on March 25, 2020 (English): "Brazil: A thousand people die in March 1960 in the north-eastern state of Ceara when the Oros dam bursts."

[2] Maximilian Kling, Marco Baldauf, Stefan Böttger, Christof Nöh: Country profile for recycling and water management in Brazil. (PDF; 11.8 MB) Water resources. German RETech Partnership, p. 45 , accessed on June 7, 2020 : “The storage capacity of dams in Brazil is around 700 billion m³ (e.g. Castanhão Dam 6.7 billion m³, Armando Ribeiro Gonçalves Dam 2.4 Billion m³, Orós Dam 1.94 billion m³). "