Impact of Environment GIS Modeling on Sustainable Water Systems Management

GIS modeling of environment is a complex process of collecting, processing, organization, storage and access on huge amount of data which represents certain part of reality (space). Database, formed in this way, is applicable for analysis, forecasting and decision making about activities and aims related to the environment. This paper, in spite of their undoubted advantages and importance, focuses on some deficiencies of GIS. Those deficiencies could appear as a consequence of fact that analysis of dynamic reality is made on the base of historical data, which consequently means that available data represent the past i.e. they are not, or they are only partially adequate to present state of the considered reality. In the same time, the collected data contains particular errors, which could influence quality of decision related to activities connected with environment, feasibility and sustainability of technical solutions. Errors especially could influence the sensitive and rare resources as freshwaters because of increasing demands and limited available sources. This paper deals with GIS modelling error of environment influence on waterpower engineering.