The article describes the authors' experience in the development of regional level Geoportal of scientific and reference domain-Geoportal "Nevsky Kray". The Geoportal's concept and architecture also with its structure and the spectrum of its maps and geoservices are described. The main provisions concerning of the project's implementation are mentioned. The soft ware that were used in the development of Geoportal are reported. Part of the text is devoted to description of the problems that authors were faced during working on the project and the possible solutions of these problems. Refs 18. Figs 6.