Vízügyi Közlemények, 1986 (68. évfolyam)

2. füzet - Joó Ottó: Vízgazdálkodás és vízrajz a Nyugat-Dunántúlon

Vízgazdálkodás és vízrajz a Nyugat-Dunántúlon 207 VITUKI: A Hévízi-tó hidrogeológiai védőidomának vize, valamint a környék felszin alatti vizei minőségének meghatározása. Szerk.: Liebe P. NyDT VÍZIG: Vízgazdálkodási adatgyűjtemény. (Kézirat.) Szombathely, 1959. VGI: Vizeink minősége 1984-ben * * * Water management and hydrography in West-Transdanubia by Dr. O. JOÓ, C. E. In this paper, the situation of water management and its tasks in the western part of Hungary are presented by the author. The area had extended over 15 000 km

2 with a population of 1.2 million before WW I. The work of half thousand water mills, flood protection over 300-400 km

2, and several drainage associations belonged at that time to the hydrographical service as far as mapping and surveying, and the observation of the measuring stations shown in Fig. 1 are concerned. The development of water management was hindered by two world wars, several economic crises and by a substantial social burden, all illustrated in Table II, by the long-term fluctuations in the capacities of drainage, subsurface drainage and irrigation. After WW II a uniform water service came into being. The growing tasks in water management are presented in Tables II and III. Development of the water service of Hungary is shown in Figs. 2 and 3. The prime areal hydrographic-hydrological objective of the author is the development of flood-efficiency investigations, of systems for alarming, forecasting and remote sensing. In connection with the eutrophication of Lake Balaton - having a water surface of 600 km

2 and a volume of 2 km

3 - the author gives an overview about the daily-weekly-monthly discharge and water quality measurements executed over 10 years. He points to the necessity of efficiencyanalyses to be performed on a reservoir - with a surface of 20 km

2 and with a volume of 20 million m

3 - built recently for the retention of the polluted waters of the Zala River that is feeding the western end of the lake. Finally, the dwindling water production and the decreasing temperatures of the thermal waters of Lake Hévíz are discussed. These factors are influenced by the exploitation of the karstic waters around the bauxite mines at Nyirád with due reference on adjoint hydrographical measurements and tasks.