Dimensioning of catchment areas, measurement of runoff using various methods and correlation with the sub-catchment areas in terms of productivity and chemical composition of the water. Execution of small drillings and expansion to Gw measuring points, sediment classification and logging according to DIN. Ramming sounding, implementation of soil infiltration measurements. Hydrological pumping tests, well test, tracer test. Taking water samples from surface waters and wells as well as performing on-site analysis, evaluating the water analysis and visualization.