Groundwater (GM1 SWIMMING POOL KO) Upper groundwater layer

The measuring point GM1 SCHWIMMBAD KO (measuring point no.: 48756) is used to monitor the groundwater level in the upper aquifer.测量点(measuring point) GM1 SCHWIMMBAD KO（测量点编号：48756）用于监测上层含水层(aquifer)的地下水位。