Vízügyi Közlemények, 1973 (55. évfolyam)

4. füzet - Rövidebb közlemények és beszámolók

the same month — including the flow to be retained in the bed — is round 600 million cu.m. For this reason, no further development in the Central Tisza Region is possible, unless the multi-purpose, complex project at Kisköre is realized. In fact, this project will bring about fundamental changes in the economico-geographic conditions in the central part of the Tisza Valley, its effects extending to the central parts of the Tisza Basin (Fig. 1.1

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9). It is therefore considered imperative to assess the effects which the operation of the project is likely to exert on the development of industry, agriculture, transportation and of the population in this region. Extremely large volumes of water are required for the industrial projects, first of all for the plants at Leninváros, envisaged under the industrial development programme of the Fourth Five-year Plan. Thus the water demand is expected to grow to 80 cu.m/sec by 1980. The thermal power station, the oil refinery and the chemical plant will return part of the water diverted into the reservoir which thus acts as a cooling pond. The hydroelectric station attached to the barrage will play an important role in covering peak loads with its capacity of 28 MW and an annual power production of 100 million kWhours. The water stored in the reservoir will provide opportunity for irrigating about 300 thousand hectares. The existing irrigation plots will also be supplied from the newly constructed main canals. In this way the practice of conveying irrigation water in drainage canals can be discontinued. The water needed for advanced large-scale animal breeding and the diluting water permitting such sewage to be used for irrigation is conveyed by the distribution canals to the animal farming centers. The ultimate storage capacity of the Kisköre reservoir will be developed in successive stages, at a rate comparable to the increase in irrigation area. Any major irrigation development is impossible unless the Nagykunság and Jászság Main Irrigation Canals are completed. At the same time, in order to meet demands already existing, the downstream section towards the Körös River will also be completed for supplying water to some irrigation sections. Water to these will be conveyed for the time being through the Eastern Main Canal. The reclamation works carried out along the reservoir and in the irrigation sections serve the interests of agriculture. These have become necessary, because intensive plant growing is impossible without more developed, regulated drainage. In the areas susceptible to secondary alkalinization subsurface drainage by mole drains will also be installed. The area lost by impoundment in the reservoir is compensated by modifying the structure of agricultural production in the farming operations. The reservoir lake is eminently suited for angling and the simpler forms of fishing. The forest areas lost in the reservoir area will be replaced by forest belts planted along the reservoir lake and along sections of the main canals. Over the 120 km long backwater reach between Kisköre and Tiszalök a waterway suited for 1250 ton vessels will be created. The full capacity of the waterway will, however, not be achieved before the construction of 265