Abstract
With the objective to reduce negative impacts on the flora caused by underground constructions, a system is proposed, being designed in order to evaluate and to predict those influences on the flora due considerable changes of the groundwater environment. Taking seasonally fluctuations inside the groundwater household into account, the water potential under the most arid conditions among past droughts is used as a references value. On the basis of several analyses dealing with water potential inside the unsaturated zone, a technique was developed combining three-dimensional saturated-unsaturated seepage analysis and vertical one-dimensional saturated-unsaturated analysis. The system is optimized regarding accuracy of the prognosis as well as expenditure of time for these analysis. The verification based on wilting coefficient analyses around underground constructions proofed the serviceability of this system.