Summary:

In the paper the results of investigations and measurements are presented, carried out for the aim of technical state assessment and safety of fall stage Krępa on the Odra river. Range and methodology of works for fall stages of low head as-sessment are described, elaborated in the Institute of Geotechnics and Hydrotech-nics of Wrocław University of Technology. Problems analyzed during measure-ments and investigations carried out on the studied barrage are discussed. The final conclusion concerns the safety state assessment of investigated object. In the recapitulation a necessity of research for technical state assessment of hydro-engineering structures is emphasized, being of great importance not only for the safety of investigated object but also for areas situated downstream.