Tensioned groundwater conditions in Brandenburg

The data have been developed as part of the project Groundwater Flurabstand 2013 for the main aquifer of the LfU Brandenburg. The areas with tensioned groundwater conditions are shown. This is based on the reference date-related groundwater measurements in spring 2011 as well as about 63,000 wells with data on groundwater levels from the GeoDaB of the LBGR. For the designation of areas with tensioned groundwater, the following applies: The groundwater pressure surface of the main aquifer is located above its deck surface within a groundwater retardant or low-conducting layer, — the layers themselves or together with the groundwater retardant layers stored above and below more than 2 m thick (without taking into account low-power rolling layers up to 0.5 m) and in which the pressure mirror height is > 1 m above the sole of the groundwater-resistant layer complex. — and at corridor distances < 2 m, all layers above the pressure mirror height are groundwater-resistant and the Pressure mirror height > 1 m above the sole of the groundwater retardant layer complex.本数据集系勃兰登堡州环境局（LfU）2013年地下水埋深（Groundwater Flurabstand）项目中，针对该州主要含水层（main aquifer）开展的研究成果，展示了承压地下水（tensioned groundwater）条件的分布区域。 数据基础包括2011年春季与参考日期关联的地下水监测数据，以及来自勃兰登堡州采矿、地质与原料局（LBGR）地质数据库（GeoDaB）的约6.3万组地下水位监测井数据。 承压地下水分布区域的判定规则如下： 1. 主要含水层的地下水压力面位于其顶板表面上方，且处于阻水层（groundwater retardant layer）或低渗透层（low-conducting layer）内部；该层系自身，或连同其上下覆阻水层的总厚度超过2米（不考虑厚度≤0.5米的低强度滚积层），且承压水位标高（pressure mirror height）高于该阻水层组合底板以上1米。 2. 当廊道间距小于2米时，承压水位标高以上的所有层位均为阻水层，且承压水位标高高于该阻水层组合底板以上1米。