In the following some, especially international, projects are listed:

• 1998 Multiaquifer Model "Rurscholle", Germany, Groundwater model for open pit lignite mining
• 1998 Multiaquifer Model "Bükkabrani", Hungary, Groundwater model for open pit lignite mining
• 1997-1998 Multiaquifer Model "Visonta", Hungary, Groundwater model for open pit lignite mining
• 1995-1996 Water Resources Management and Agricultural Production in the Central Asian Republics (Uzbekistan, Kasakstan, Kirgistan, Tadchikistan, Turmenia) Development of a Water and Land Resources Information System
• 1995 Development of a Information System for Groundwater Recharge in the West German Lignite Area
• 1994 Pre-Feasibility Study Water Resources Management in Lemberg and Cherson, Ukraine
• 1994 Multi-Layer Groundwater Model Lauchhammer for the Rehabilitation of a contaminated Industrial Site
• 1993 Groundwater Model Waterwork Hoppbruch, Groundwater Model (coupled with a GIS-System) for the Preposition for optimal Water Resources Management for a strongly influenced Aquifer by Open Pit Mining
• 1991-1992 Groundwater Model "Thermal Water Resources Study": Development, Calibration and Simulation of a Multi-Layer Groundwater Model for the Optimal Management of the Thermal Water Resources of Hungary
• 1989-1994 Multiaquifer Groundwater Modell Rurscholle: Development, Calibration and Simulation of a Multi-Layer Groundwater Model for the Optimal Management and Environmental Influence of Open Pit Mining
• 1989-1994 Multiaquifer Groundwater Model Venloer Scholle: Development, Calibration and Simulation of a Multi-Layer Groundwater Model for the Optimal Management and Environmental Influence of Open Pit Mining
• 1992 Feasibility Study Scarp Dera Ghazi Khan (Pakistan): Surface and Subsurface Drainage, Groundwater Table Control of Irrigated Areas
• 1988-1989 Grundwassermodell Souss-Basin (Morocco) : Development and Calibration of a Finite Element Groundwater Model for the Souss-Basin