Vízügyi Közlemények, 1980 (62. évfolyam)

2. füzet - Takács Lajos: A Körösök vízkormányzási rendszere

Magyar—jugoszláv vízimunkák 207 Water Development projects oï joint Hungarian-Yugoslavian interest in the valley of the Dráva River by I. Polohn and F. Szappanos, Civ. Engrs. The territory of Hungary is situated in the deepest part of the Carpathian Basin, and consequently all the runoff from the catchment must pass inevitably the area forming the greatest part of the country. Round 96% of the surface waters originate accordingly abroad. Consequent from this fact, the physiographic unity of the catchment subdivided by political boundaries has been recognised and the neighbouring countries sharing this catchment have mutually respected the interests of their respective neighbours. This is the general setting for the joint water development efforts, described in the paper, о Г the two neighbouring countries, namely Hungary and Yugoslavia, following the, provisions of the Water Management Agreement signed in 1955 already. The nationaly boundary between Hungary and Yugoslavia is round 610 km long of which about one-third is formed by rivers and streams. The border line crosses 30 rivers and major streams of which the Danube, the Tisza, the Dráva and the Mura rivers must be mentioned as those forming the boundary over 150 km lengh. The first and most important joint construction efforts by the two countries were started shortly after the termination of World War II., as early as in 1947, including the exchange of hydrological data, the regulation of some sections of the Dráva and Mura rivers, as weli as training the Borza, Karasica, and Tapolca Creeks. The other water resources projectes of joint interest were tackled thereafter successively. The projects ol' joint interest aimed at water resources development in the valley fo the Dráva River are described in Part 2 of the paper. The Water Agreement concluded by the two countries is considered in detail, which has laid the foundations for the realisation of regional water management programs. The water projects of joint interest affecting the valley of the Dráva River are illustrated in the layout map of Fig. 1 and the explanatory tabulation (

Tabla I) attached thereto. The construction acrivities carried out on the Dráva River from 1955 to 1980 are described in detail, grouped as a) flood control and flood plain development projects under which a section of the levees along the Dráva River have been declared a flood control structure of joint interest (Fig. 2.), b) river regulation and water development work (Figs. 3, 4 and 5) together with water power development on the Dráva river (Fig. 6), c) the training works on minor streams of joint interest (Figs. 7 and 8), d) the problems and efforts at pollution control and e) the cooperative work of hydrologie data collection. The objectives of the future and the opportunités over longer perspectives are outlined in Part 4, in this sequence. The most important venture is the hydroelectric project Barcs-Gyurgyevac (Fig. 6) presently in the preparatory stage and scheduled for realisation between 1980 and 1990. Mention is made furlher of the manifold projects aimed at the improvement of water development by storage and water transfer. The paper is concluded by stating that over the past decades the cooperative efforts at solving the water problems in the Dráva Valley have brought important results to both countries. * Ungarisch

—jugoslawische Wasserbauliche Arbeiten gemeinsamen Interesses ini Draulal von Dipl.-Ing. István Polohn und Dipl.-Ing. Ferenc Szappanos Das Gebiet Ungarns liegt im tiefsten Teil des Kartpatenbeckens. Demzufolge kommen die aus allen Teilen des Beckens stammenden Gewässer über unser Landesgebiet zum Abfluss. 96% des Oberflächenabflusses stammt aus dem Ausland. Dies bringt die Notwendigkeit der Anerkennung der geographischen Einheit des durch