Preliminary pan-EU DRASTIC application and concept of lumped index method
On the left: Preliminary pan-EU DRASTIC application with readily available data (A: Depth to water; B: Topography; C: Recharge; D: Impact of vadose zone; E: Aquifer type; F: Aquifer conductivity; G: Soil type). On the right: Conceptual picture of the lumped index method applied to calculate groundwater volumes of each vulnerability class
Source: BGR & IGME