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COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- OPERATION OF SMALL AGRICULTURAL DAMS IN BULGARIA – STATE-OF- THE-ART* Bogdan R. NIKOLOV Doctoral student, Department of Hydraulic, Irrigation and Drainage Engineering, UNIV. OF ARCHITECTURE, CIVIL ENGINEERING AND GEODESY Dimitar S. KISLIAKOV Professor, Department of Hydraulic, Irrigation and Drainage Engineering, UNIV. OF ARCHITECTURE, CIVIL ENGINEERING AND GEODESY (UACEG) BULGARIA 1. INTRODUCTION Dams are complex multi-purpose engineering facilities which are always built in connection with a characteristic particular set of local conditions (hydrological, geological, topographical etc.). Their construction is a result of a complicated investment process consisting of several simultaneously running lines of activities such as administrative, financial, technical, economical etc. One activity of special importance in this bunch is the design in all its parts (i.e. special fields) and phases. In the design namely, all parameters, scenarios and modes of the operational life of the dam and its appurtenant facilities incl. the reservoir are formulated with respect to the particular water resources management tasks and to the requirements of the currently active codes and other regulations. It is well known however that the operational life of the dam essentially depends on the maintenance of the facilities, their performance in fulfillment of the operational tasks set with building of the dam is not possible without such proper * Exploitation de petits barrages agricoles en Bulgarie - état de l'art 1436