نبذة مختصرة : Context and background Rains, which are the main source of surface and ground water resources, provide a quantitative explanation of variations in the components of the hydrological regime in its broadest design. The Hodna watershed, situated in northeastern Algeria, is strongly marked by an arid climate highlighted by low rainfall. The latter, although weak, fall in the form of showers resulting in flooding flows. Goal and Objectives: Creating a Hydro database by multi-criteria approach is a line of research to provide a methodological framework for thematic and numeric mapping. This work is intended to establish a models of geographic hydrodatabase and models of mapping with "thematic and spatial" analysis through a GIS (Geographic Information System) approach. Methodology: The study used is to create thematic maps by combining in GIS, by representing the information collected in the form of maps and the Data tables, was carried out using the software "ArcGIS" by the exploitation of the data available at our level: DRE (Water Resources Directorate) and ANRH (National Agency of Water Resources). Results: As a result, a hydrodatabase was identified (DB), followed by the creation of Models of a Geographic Database (MGDB) for this basin and the assessment and estimation of groundwater and surface water in the Hodna Basin. The analysis of the hydrological data revealed that the surface water flow rate is influenced by physical characteristics and by meteorological parameters. The study provided firstly, the development of several maps with an improvement and an organization of information and rapid decision-making, then the Arc-GIS allows a great userfriendliness at the level of the design and at the level of the use of the application and finally access to the data is simplified, the queries are executed and the results are fed into the statistical calculations and the cartographic representation.
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