Agreement concerning water-economy questions between the government of the Federal People’s Republic of Yugoslavia and the Government of the People’s Republic of Bulgaria.

This Agreement concerning water-economy questions between the government of the Federal People’s Republic of Yugoslavia and the Government of the People’s Republic of Bulgaria aims to examine and resolve all questions of water economy, including measures and works which may affect the quantity and quality of the waters and which are of interest to both or either of the Contracting Parties. The provisions of this Agreement shall apply to related water-economy questions, measures and works on rivers, tributaries and river basins followed or intersected by the State frontier, and in particular to: (a) The regulation and canalization of rivers and tributaries and the maintenance of river beds; (b) Drainage; (c) Storage and retention works; (d) Water supply and pipe-laying; (e) Protection of the waters against pollution; (f) The study and utilization of ground-water; (g) The utilization of water power; (h) Protection against soil erosion in forested and agricultural areas afforestation, soil conservation, the erection of retaining-walls and silting control; (i) The utilization of waters for irrigation; (j) Hydrological, geological and other surveys and the planning and construction operations and use of water-economy installations and works; (k) The apportionment of the cost of survey, planning and construction operations and of the maintenance of installations. The Contracting Parties undertake: Each in its own territory and jointly in the case of rivers and tributaries followed or intersected by the State frontier, to maintain in good condition the beds of rivers and of tributaries and all installations; By agreement, to modify existing installations or to erect and am maintain new installations and to initiate new works and measures in the territory of either contracting Party for the purpose of changing the regime of rivers and tributaries followed or intersected by the State frontier. The two Contracting Parties shall participate, each in proportion to the benefit accruing to it, in the maintenance of existing structures and installations in rivers and tributaries and in the erection and maintenance of new structures and installations of interest to both Parties. The apportionment of expenses and the method of payment shall be determined by agreement between the Contracting Parties.