Institute of Earth Sciences (ICT), Pole of University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
Institute of Earth Sciences (ICT), Pole of University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
Environ Res. 2021 Nov;202:111756. doi: 10.1016/j.envres.2021.111756. Epub 2021 Jul 27.
Groundwater consumption has become increasingly relevant for urban development. The city of Montes Claros (Minas Gerais, Brazil) is located in the border region of the Brazilian semi-arid polygon and has registered conflicts of water use for decades ago. The study area contains a complex karst system responsible for the heterogeneous permeability of water recharge and groundwater flow. The urban area of Montes Claros is located in the Vieira River watershed and contains different groundwater wells used to agro-industrial and human consumption. Almost groundwater captions have a low specific capacity with a consequent groundwater depletion. On the region, there are significant areas with a negative water balance concerning to water recharge and groundwater exploitation. Groundwater flow has a regional dominant direction of SW-NE, however locally, groundwater flow varies and could be identified some clusters with high hydrological potential. The contrast between hydrogeological features of the outcropping lithotypes added to the geological structures contribute to variations in the potentiometric level and in the productivity of aquifers. The main aim of this study is a reviewer of the regional hydrogeology of the municipality of Montes Claros to evaluate a potential groundwater availability on the urban area and minimize a groundwater overexploitation and scarcity. A detailed characterization of the local hydrogeology from Montes Claros region will be crucial to a definition of more efficient water supply policies on the management of water resources, particularly in a scenario of climate change and water scarcity in semi-arid areas.
地下水的消耗对于城市发展变得越来越重要。巴西米纳斯吉拉斯州的蒙特斯克拉罗斯市位于巴西半干旱多边形的边界地区，几十年来一直存在用水冲突。研究区域包含一个复杂的喀斯特系统，该系统负责水补给和地下水流动的非均质性渗透。蒙特斯克拉罗斯市的城区位于维埃拉河流域，拥有不同的地下水井，用于农业工业和人类消费。几乎所有的地下水开采都具有低的比流量，导致地下水枯竭。在该地区，有大量区域的水补给和地下水开采存在负水平衡。地下水流动具有西南-东北的区域主导方向，然而，在局部地区，地下水流动会发生变化，并且可以识别出一些具有高水文潜力的集群。出露岩性的水文地质特征与地质构造的对比，导致了地下水位和含水层产能的变化。本研究的主要目的是审查蒙特斯克拉罗斯市的区域水文地质学，以评估城市地区的潜在地下水可用性，并最大限度地减少地下水过度开采和短缺。对蒙特斯克拉罗斯地区当地水文地质学的详细描述对于制定更有效的水资源管理供水政策至关重要，特别是在气候变化和半干旱地区水资源短缺的情况下。
