Through our decades of hydrological and ecological practices and the activities on the waterways of the German Federal a valuable inventory of hydrological information has emerged in the stuck our experience and knowledge base. Almost all environmental information have a direct or indirect spatial reference. This inventory of spatial data continues to grow. He is both the basis and results of our scientific work. With GGInA, the hydrological Geographical Information and Analysis System of BfG, you can research yourself in this inventory. Much of the information and data is accessed directly on the Metadata Catalog Search and specialist applications. The Geoportal also opens up databases of our partners in the transport and environment. At the same selected data can also be integrated into other environmental portals.