This study aims to analyze the impacts of the reservoir network within Pereira de Miranda - CE catchment (also called Pentecoste) over sediment transport and storage capacity of the system. The survey of the "damming" was carried out using satellite images. We identified 502 erosion units, derived from overlaying maps of the Universal Soil Loss Equation parameters, which allowed the estimation of localized erosion in the basin and identification of areas potentially generating sediment. In order to estimate silting in Pentecoste reservoir, different system structure scenarios were considered. An average erosion rate of 59 t ha(-1) year(-1) was estimated. According to the model, the silting of Pentecoste reservoir may vary from 1.1 to 2.6 per decade, depending on the scenario considered. It is also observed that the reservoirs upstream can retain up to 58 of the sediment that would reach the Pentecoste reservoir. Very small reservoirs with a capacity of up to 100,000 m(3), although representing only 1.83 of the system water availability, are able to retain almost 8 of total sediment produced.
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机译：本研究旨在分析Pereira de Miranda - CE集水区（也称为Pentecoste）内的水库网络对系统沉积物运输和储存能力的影响。“筑坝”的调查是使用卫星图像进行的。我们确定了 502 个侵蚀单元，这些侵蚀单元来自通用土壤流失方程参数的叠加图，可以估计盆地的局部侵蚀并确定可能产生沉积物的区域。为了估计五旬节水库的淤积情况，考虑了不同的系统结构情景。平均侵蚀速率为59 t ha（-1）年（-1）。根据该模型，五旬节水库的淤积量可能从每十年1.1%到2.6%不等，具体取决于所考虑的情况。还观察到，上游的水库可以保留多达 58% 的沉积物，这些沉积物将到达 Pentecoste 水库。容量高达100,000 m（3）的极小型水库虽然仅占系统可用水量的1.83%，但能够保留近8%的沉积物。
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