Despite the fact that the Russian Federation, in general, is among the water-sufficient countries, some of its regions are experiencing water lack. One of such regions is the Republic of Crimea, where the situation with water supply is a serious problem after the water supply through the North Crimean canal has been stopped since 2014. The authors present the results of the spatial database’s development with the aggregated materials about the surface runoff and groundwater resources, the factors affecting their formation, collected in the research process. The database includes the information about the volumes of water consumption and the quality of the water used in the Crimean peninsula. The structure of the database created as a cartographic support for the assessment of water availability in the region is described. On the basis of the obtained data, a series of maps is created, which is an example of structuring the data and the possibility of their targeted use for the rapid display of such indicators, that will enable us to present the water availability of the Crimean regions in various aspects, as well as for solving other applied problems.