In southern South America, Brazil, in the state of Santa Catarina, the neglect and lack of environmental supervision during coal mining caused the contamination of surface and groundwater by acid mine drainage (AMD). By the force of the local law, environmental reclamation actions in these abandoned areas have been carried. A scientific work of monitoring and assessment of the water resources within these areas has never been developed, as the efficacy of the reclamation strategies has never been discussed. This work aims to fill this gap by presenting and analyzing the environmental reclamation strategy of a former degraded coal mining area and its impacts on local water resources. The water monitoring plan in Area IV’s was carried out in groundwater, and in lentic (ponds) and lotic (rivers) environments of surface waters, fourteen monitoring campaigns were conducted. The results showed that upstream and downstream river points have different water qualities, with the downstream points having poorer water quality, still affected by past mining activities. From the surface water perspective, the reclaiming method adopted was effective in three of the four ponds, presenting problems only in the downstream one. Two hypotheses were proposed; the first hypothesis is that contamination happens due to leaching of the material that still remains on the ponds’ banks into the water. Another hypothesis is that the contamination comes from the upstream groundwater inflow into the pond, which runs through the entire area before reaching the pond. Those results serve to further access the actual monitoring perspectives as well as to better develop future reclaiming strategies.

在南美洲南部的巴西圣卡塔琳娜州，煤矿开采过程中对环境监管的忽视和缺乏导致地表和地下水被酸性矿井排水 (AMD) 污染。受当地法律的约束，这些废弃地区的环境复垦行动已经展开。对这些地区的水资源进行监测和评估的科学工作从未开展过，因为从未讨论过填海战略的有效性。这项工作旨在通过介绍和分析前退化煤矿区的环境复垦策略及其对当地水资源的影响来填补这一空白。IV区的水监测计划在地下水和地表水的静水（池塘）和水流（河流）环境中进行，开展了十四次监测运动。结果表明，上游和下游河流点的水质不同，下游点的水质较差，仍受过去采矿活动的影响。从地表水的角度来看，所采用的回收方法在四个池塘中的三个中有效，仅在下游一个出现问题。提出了两个假设；第一个假设是污染的发生是由于仍然留在池塘岸边的物质浸入水中。另一种假设是污染来自上游地下水流入池塘，在到达池塘之前流经整个区域。这些结果有助于进一步了解实际的监测观点，并更好地制定未来的回收策略。