In 2013, it was reported that to correct the constant flooding of the Flag Square, the City of Rio de Janeiro would build five underground reservoirs, known as 'big pools', which together would capture and store rainwater and prevent the overflow of rivers and flooding the streets.
However, in March 2016, Flag Square (Praça da Bandeira) was back in the news because the local reservoir overflowed and, again, the streets flooded.
The company hired by the management of Rio Water Foundation Hall of Rio de Janeiro responsible for the project, invited MS INSTRUMENTOS (Hawk Joint Venture Partner) to study the problem and offer a reliable solution.
After careful evaluation of the situation, Hawk Measurement Systems Sultan Acoustic Wave level device was recommended as a solution to continuously measure the level of water in the underground pools.
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