Simulating hydrological behavior makes it possible to analyze and predict water availability in river basins, anticipate potential events and carry out quantitative water balances using various scenarios. These scenarios arise from changes in land use and landscape over the years, the occurrence of extreme events and the effects of climate change. In this context, the aim of this study was to evaluate the effectiveness of the Large Basin Hydrological Model (MGB-IPH) for representing rainfall-runoff in the paired watershed of the Piracicaba River and Piranga River in the state of Minas Gerais, Brazil, using the usual calibration and validation procedures. The results of the average statistical performance indices NASH, NASH-Log, BIAS, R², D and Dr showed that the model was able to simulate the seasonality of the watersheds and presented good adjustments, with a tendency to overerestimate the flow, but within acceptable limits. It is concluded that the model performed satisfactorily in its ability to simulate the hydrological behaviour of the Piracicaba River and Piranga River watersheds, despite its limitations and the lack of input data, making it an applicable tool in local contexts.

中文翻译：

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对巴西米纳斯吉拉斯州配对流域流量模拟的 MGB-IPH 水文模型进行验证。

模拟水文行为可以分析和预测流域的水可用性、预测潜在事件并使用各种场景进行定量水平衡。这些情景是由于多年来土地利用和景观的变化、极端事件的发生以及气候变化的影响而产生的。在此背景下，本研究的目的是评估大流域水文模型（MGB-IPH）代表巴西米纳斯吉拉斯州皮拉西卡巴河和皮兰加河配对流域降雨径流的有效性，使用通常的校准和验证程序。平均统计性能指数NASH、NASH-Log、BIAS、R²、D和Dr的结果表明，该模型能够模拟流域的季节性，并呈现出良好的调整效果，有高估流量的倾向，但在可接受的范围内限制。结论是，尽管该模型存在局限性且缺乏输入数据，但其模拟皮拉西卡巴河和皮兰加河流域水文行为的能力令人满意，使其成为当地情况下的适用工具。