The water-course Danube-Ostrava 253 km long ought to come into existence by regulation of the river bed of the Morava and the Bečva and also of older artificial canals, by excavating of new navigation canals and by building up of further water undertakings (barrages, lock chambers, ports). It is a large technical work meaning an important influence into human environment in floodplains and in Podbeskydská pahorkatina Hills. The building up of this large waterwork will influence not only the water stream, but the surroundings, too. Permanent increase of water level in the beds of navigable rivers, canals of shipping and ports, may result in decrease of the levels of shallow groundwater in surroundings, unless we succeed in controlling it by construction of expensive undertakings with complicate operation (drainage chanel, pumping station etc.). The consequences of the phenomenon ought to be the increased influent seepage of polluted surface water into permeable sediments, waterlogging of agricultural areas, resp. also underwashing of buildings. In the reaches where will be necessary to excavate the river beds, gets to the decrease of the level of surface water and of shallow groundwater in adjacent floodplains. These changes bring worsening of river regime, decreasing supply of soil water by filtration from the level of shallow groundwater and decrease of yields of groundwater resources (wells) in the influenced area. Main positive changes in human environment ought to appear indirectly when a part of transport of goods by trains and lorries would be transported by ships. Shipping has less negative influences on human environment in comparison with other moods of transport.