The objective of this study was to regionalize 7-day 10-year low flows, long-term annual mean, and 90% and 95% permanence flows from Piquiri (PR) river basin. The following regionalization methods were adopted: Traditional, Linear interpolation, Chaves, Modified linear interpolation, and Modified Chaves. The equations obtained by the Traditional method, adding main river length or drainage density as independent variables, significantly improved R 2 equations value. Streamflow forecasting by Linear Interpolation and Chaves methods were as good as those provided by the Traditional Method, thus, these methods could be applied to Piquiri River basin, especially when drainage area is the only available spatial information.
This paper analyzes the variability and the precipitation trend of the State of Paraná, in Brazil. For that, monthly precipitation data belonging to 24 precipitation stations in a 30-year period (1980-2010) were analyzed and they were compared with projections of precipitation for the years 2016-2050. These data were simulated by Eta/Miroc5 for RCP 4.5 (Representative Concentration Pathways) from the Center for Weather Forecasting and Climate Studies CPTEC/INPE and the historical data of precipitation were taken from National Water Agency (ANA). The Mann-Kendall non-parametric test and the Sen’s slope estimator were applied to detect trends and magnitudes, respectively. The Mann-Whitney test was used to compare the median of the historical series (1980-2010) with the simulated series (2016-2050) and the comparison of the means between the two series was performed by Test t. The results draw attention to the great variability and significant changes in the monthly average rainfall that may occur, if the climate change scenarios that were considered become a reality in the near future.
Apesar do Brasil ser privilegiado em relação a quantidade de água, sua distribuição é heterogênea e decorrente dos altos índices de poluição, temos uma queda na qualidade da água. Visando evitar desperdícios, a captação e aproveitamento de água da chuva estão se tornando alternativas cada vez mais viáveis. Considerando este contexto, este trabalho tem por objetivo estudar a viabilidade de uma possível implantação de uma cisterna no Centro Municipal de Educação Infantil - CMEI Jacira Bongiolo Verona, na cidade de São Miguel do Iguaçu - Paraná. A área de captação será o telhado do CMEI e, por ser um local que acumula muitas impurezas e sujeiras, assim poluindo a água captada, será utilizado um sistema de desvio de águas primárias do tipo DESVIUFPE, buscando melhorar a qualidade deste recurso. Para o transporte da água será utilizado o sistema de calhas que já existe no CMEI. O dimensionamento do reservatório, será calculado seguindo o Método Prático Inglês. O projeto prevê a utilização dos seguintes materiais: canos de PVC, ligações do tipo tê’s, luvas, reservatório de plástico e uma torneira para a retirada da água. A água captada será utilizada para fins não potáveis como, limpeza dos espaços internos e externos.
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