NOVÁKOVÁ, P.: utilization of factor analysis in waterworks engineering. Acta univ. agric. et silvic. Mendel. Brun., 2004, LII, No. 2, pp. 121-128 The aim of the work was to elaborate and evaluate the water quality of water reservoir Vranov nad Dyjí. Fresh water was sampled in five different locations of the reservoir (three important tributaries, dam and water captation locality). Ten, the most essential water quality indicators were selected. From the point of view of water quality indicators

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... omplexity the most integrated samples were taken in the water captation locality (period 1984 -2002). At other locations, there were missing dates from the eightieth, but their volume was sufficient for statistical processing. Correlation analyses for the individual locations and dimensions were done as so as determination coefficients for all localities during the time period of 1994 -2002. The results demonstrate very good allocation of the water captation from the point of view of the water flow. Multiples and factor analysis was done for the period of 1984 -2002 in the locality Jelení zátoka where the object of water captation is situated. The results of the analysis are nine factors, which influence the water quality of the reservoir. From the point of view of the importance three factors were interpreted. The analyses and results are part of my Ph.D. thesis. The results will be used for other evaluations of the water quality in the reservoir and tributaries, for activities in the catchment's area and for proposal processing other zones of second level of protected areas. risk analysis, factor analysis, water protection zone of the water source, law no. 254/2001 Ročník LII 13 Číslo 2, 2004