Geomorphologic forms and processes have primary and eliminatory significance in the process of determining the proper locations for trash disposal. Those forms are results of long-term morphogenetic processes and they implicate the dependence between the landfill and a landscape where it is situated. Determining proper location for landfill is crucial because it becomes a factor of permanent alternation of the landscape. The basic task that a possible location should satisfy is as least as possible impact zone. Concerning this request, the best locations are those on fossil geomorphologic forms that are out of active geomorphologic processes (erosive fluvial terraces and blind karst valleys). The selection of location for landfills has its economic consequences that are determined in the light of theory of development thresholds and cost-benefit analysis. The work contains comparative threshold graph with short- and long-term economic effects (costs) of locating a landfill on flood plain and an erosive terrace. There’s also given a matrix of suitability that explains economical, social, ecological, technical and esthetical factors relevant for selecting the adequate location for landfills.