Journal of
Faculty of Civil Engineering

FACULTY OF CIVIL ENGINEERING JOURNAL 18, 2009.y., pp. 61-71

	UDC: 627.51(497.113)
	CC-BY-SA 4.0 license
	Author : Radovan Savić, Atila Bezdan
	Summary:
	The paper analyzes occurence, duration and change of low and minimal water levels of the river Danube on the watergauge station Bezdan. The analyses have been conducted regarding the conditions for water release from the river Danube to the Main Canal Network of the Danube-Tisa-Danube Hydro-system (MCN HS DTD) on the main water intake at Bezdan. Short historic overview of the development of early waterintake facilities and problems in their work is represented in the introductory part of the paper. The occurence of the low water level of Danube that restricts the work of the waterintake facility is presented and statisticaly analyzed later on. Namely, the maximal water release into the canal, of about 60 m 3/s, occurs only at certain water levels. At lower levels the possibility of the gravitational release of water into the canal gradually diminishes until complete cessation of this option and transfer to the work of pumping station which total capacity amounts to 12 m 3/s (3 x 4 m3/s). The work mode of the pumping station also depends of the Danube water level. Namely, here too the decrease of water level excludes the possibility of the work of certain pumps until the complete cessation of the work of pumping station and the possibility of supplying water to HS DTD in any way. Throughout the history of the water intake at the canal DanubeTisa- Danube, as well as today, it is clear that the Danube water levels in the region of w.s. Bezdan are of a great importance and can represent significant restriction in providing water to multipurpose hydro-system. The occurrence and duration of the aforementioned characteristic water levels and its change at water gauge station Bezdan, have been analyzed during the perennial period . The obtained results show that the occurrence of low water levels is more frequent and its duration is significantly longer, with the possibility of intensifying this problem even more in the following period.
	Keywords:
	Danube, water level, water gauge, hydro-system Danube-Tisa-Danube