Summary:

Designation of lands for development is a vital process. Regrettably, natural conditions are often disregarded in spatial planning. The research focuses on the analysis of soil conditions and relief for the purposes of exclusion of lands from development. It was assumed that lands of excessive soil moisture content and wetlands are often located in depressions. Such lands should be excluded from development or actions should be taken to limit the negative impact of the said factors. It was also investigated, whether such lands are considered in communal studies of conditions and directions of land use. SAGA-GIS and ArcMap software was used in the research, as well as data computed in OCTAVE environment. The research proves that the existing as well as contemplated development plots are sometimes located in areas of poor bearing capacity, excessive soil moisture content, as well as in closed drainage basins. It should be emphasized that the research results unambiguously indicate that analysis of suitability of given terrains for development is not taken into consideration for the purposes of drafting spatial planning documents. Approximately 25% of the investigated development area should be excluded from development. In rural areas such exclusion is particularly feasible due to greater availability of space.