A pilot case study was already developed for an agricultural area of 650 ha, in the south - west of Romania. The procedures were developed and calibrated on real data (digital parameters of the land surface, hydrogeological characteristics of the subsurface, land use, runoff coefficients, infiltration potential, precipitation parameters) and were used to identify potential solutions for climate change mitigation, respectively flood mitigation and water storage for using it during the drought periods. The adequate software for each phenomenon involved in this application were tested. The steps that have to be followed for the implementation of this procedure were clearly defined and the results achieved on mathematical models for this pilot case study are very satisfactory. The impact of this solution on rain water collection and storage was positive