Inland excess water is a serious hazard and represents a contemporary problem in Hungary, particularly in Csongrád County and in Serbia, especially in its northern part, the Autonomous Province of Vojvodina. The project aims to find answers to four interrelated questions with the means of both fundamental and applied research in the Marosszög and Banat areas during the 24 month time period. First, we are intended to examine the formation of the different types of inland excess waters. We are going to monitor the conditions of groundwater seepage using a monitoring well system with acoustic sensors. We would like to find and test a novel methodology for the field mapping of inundations, which includes the verification by remotely sensed data of the test sites, in order to evaluate their use in excess water protection works. We plan to develop an internet based monitoring system, which can support the management of inland excess water. Finally, we are ready to set up an excess water risk model, with which the formation of some genetic inland excess water types can be forecasted, and actions can be taken. Results will significantly help the water management authorities and the affected population to take both preventive and operative action. The enormous quantity of data, information and knowledge, accumulated by the multi-disciplinary fields, may lead to a long term solution for the yearly returning problem. The integration of modern and traditional tools and approaches is the key for generating a change in the strategy of inland excess water management, and can be harmonized with the EU directives as well. In the region, the University of Szeged and the University of Novi Sad have got the largest research potential. The present project is a good opportunity to create a prosperous scientific cross-border relationship to strengthen environmental and economical sustainability in the larger area. Achievements: Inland excess water is a serious hazard and represents a contemporary problem in Hungary, particularly in Csongrád County and in Serbia, especially in its northern part, the Autonomous Province of Vojvodina. The project partners, recognizing the importance of the issue, tried to end a long-term solution to the yearly returning problem. The partner institutions organized workshops, analysed the research area and important factors for precise measurements of the groundwater level, designed acoustic monitoring sensors, set up a system of 25 measurement wells, sensors, data storage and transfer units and weather resistant compact boxes, which collects groundwater data and sends it to a data processing unit, and analysed aerial photographs of both sides of the border. The result of the project was an Internet-based map-server which describes the state of inland excess water in the border region. The partners also published a book that brings together the scientific results regarding inland excess water in this area. Integration of modern and traditional tools and approaches is the key to generating a change in the inland excess water management strategy which can also be harmonized with EU directives. This project is a perfect example of how to create a prosperous scientific cross-border relationship to strengthen environmental and economic sustainability in a larger area.