The following objectives were established for water resources management: (1) development of methodologies and criteria for selecting surface- and groundwater geographical zoning characterization methods, (2) application of the selected methodologies to the Huai watershed, in PR China. In order to achieve the main objectives of the project, management methodologies were developed based on pollution risk and vulnerability analysis, groundwater flow and pollution transport modelling and definition of protection zones for supply wells. For the definition of protection zones of groundwater supply wells the Krijgsman and Lobo-Ferreira was used; for surface water supply sources the  methodologies used where (1) the USGS indexed factor, (2) WRASTIC, which evaluates the susceptibility of surface water contamination in a watershed. The case-study area was the Zhangji region. The activities developed in this project were the following:

• Development of a mathematical model of flow and pollutants transport between aquifers and aquifers and surface water bodies.
• Application of Krijgsman and Lobo Ferreira method for the definition of supply wells’ upstream protection areas.
• Application of WELLFLOW model for a more accurate outlining of these protection zones.
• Evaluation of groundwater pollution vulnerability using: (1) DRASTIC methodology, (2) mathematical modelling.
• Inventory of pollution sources and their associated loads.
• Pollution risk analysis taking into account pollution dangerousness, type of entry into the system and the system’s pollution vulnerability. This evaluation used: (1) USGS and GVSS methods, (2) groundwater flow and transport mathematical models.
• Evaluation of surface waters pollution vulnerability using: (1) WRASTIC method (its handicap is the disregard of surface-groundwater interactions), (2) USGS method, (3) CHDS method.
• Definition of water quality indicators and guidelines for water resources protection and management policies.