The paper refers geodetic surveys of vertical displacements. The possibilities of wider use robust estimation methods were studied. Till now these methods were used only to identification of constant reference points. In the paper there are following methods: Huber's, Hampel's and linear (provided in geodetic software: „Niwelacja” [Osada 2000]) which were used to periodical surveys' final adjustment. Then the values and significances of displacements were calculated and they were compared with the results from classical method. The calculations were done for eight check surveys of residential buildings localized in Traugutta Street in Wrocław, which were flooded in 1997.

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