The accelerated disorderly and unplanned growth of cities has had negative impacts, such as the inability of the rainwater collection network to drain the area, causing flooding. Developing sustainable urban drainage projects, integrated urban water management and compensatory techniques in urban drainage are alternatives used to reduce the negative effects of urbanization on the hydrological cycle. Planning the surface runoff of urban water should go beyond structural projects, we must consider technical, financial, political and cultural aspects, among others, which makes this process complex, although very necessary. The aim of this paper is to undertake a brief literature review presenting the main urban drainage compensatory techniques used to promote sustainable management of rainwater. It concludes that there are many compensatory techniques that can be applied to promote and make sustainable urban drainage possible, whether through structural or non-structural measures.
This paper aims to investigate stationarity in the pluviometric historical series of the state of Ceará, Brazil. After selection, the gaps were filled using linear regression. The Mann-Kendall and Pettitt tests were conducted with the help of the package “trend”, in R programming language. After applying the tests, it was noted that most of the selected stations presented stationary behavior, except for Chorozinho, which presented a p-value of 0,018 for the Mann-Kendall test, i.e., rejecting the null hypothesis of stationarity at 5% significance and presenting a positive monotone trend. For the Pettitt test, the station presented a p-value of 0,022, thus rejecting the null hypothesis of lack of change point at 5% significance, the change point being in the year of 1982. It is concluded that it was possible to analyze the stationarity of historic pluviometric series and have a better understanding of the hydrological regime of the region.
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