Nauka Przyroda Technologie

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Tomasz Kałuża, Paweł Zawadzki, Ireneusz Laks, Tomasz Tymiński
Influence of periodic water level increase on flow in Poznań Water Ways System

In the period 1968-1972, a project named “Rebuilding of the Poznań Water Ways System” was carried out. Within the scope of the project the Chwaliszewo Meander of the Warta river was cut off and covered. A discussion about reconstruction of Chwaliszewo Meander has been run for many years. The results of hydraulic computations of the influence of a weir on water table distribution in Poznań Water Ways System have been presented in the paper. Two different localizations of the weir were considered. Initial maximum water level of upper side of the weir was calculated. The influence of damming up on water level distribution in the Poznań Water Ways System was analysed. One-dimensional unsteady open channel flow computer systems HEC-RAS and SPRuNeR were used to carry out calculations. Building the weir, regardless of its localization, allows to raise water level in the main channel of the Warta river, increase minimum water depth and point to the architecture and recreation values of the Warta river. It is assumed that damming up is necessary only for flow rate below 100 m3/s in both localizations of the weir. The weir in focus should not create obstacles to the inland navigation and fish migration. To meet these requirements two additional hydraulic constructions must be projected: sluice and fish migration water gate.

Key words: the Warta river, mathematical model, Poznań Water Ways System
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For citation:

MLA Kałuża, Tomasz, et al. "Wpływ okresowego piętrzenia wody na przepływy w Poznańskim Węźle Wodnym." Nauka Przyr. Technol. 7.2 (2013): #27.
APA Tomasz Kałuża1, Paweł Zawadzki1, Ireneusz Laks2, Tomasz Tymiński3 (2013). Wpływ okresowego piętrzenia wody na przepływy w Poznańskim Węźle Wodnym. Nauka Przyr. Technol. 7 (2), #27
ISO 690 KAłUżA, Tomasz, et al. Wpływ okresowego piętrzenia wody na przepływy w Poznańskim Węźle Wodnym. Nauka Przyr. Technol., 2013, 7.2: #27.
Corresponding address:
Tomasz Kałuża
Katedra Inżynierii Wodnej i Sanitarnej
Uniwersytet Przyrodniczy w Poznaniu
ul. Piątkowska 94
60-649 Poznań
Accepted for print: 4.03.2013