Plate 8.4 Principal Types of Aquifers

Groundwater is the source of more than 80 % of the water supply of Switzerland. For this reason, an urgent task of both the public and administration is to seek a sustainable exploitation and optimal protection of groundwater resources. An aquifer is a geological formation in which a large amount of groundwater circulates through openings. In Switzerland, it is possible to distinguish roughly between six major types of aquifers. Representative examples are schematically illustrated by means of cross-sections and diagrams on the map page.地下水是瑞士80%以上供水的来源。为此，公众与行政主管部门的一项紧迫任务，是实现地下水资源的可持续开发与最优保护。含水层（aquifer）是指可让大量地下水通过空隙循环流动的地质构造。在瑞士，大致可划分出六大类主要含水层。本数据集的地图页面中，通过剖面图与示意图对典型含水层示例进行了示意性展示。