SIMULATION OF SEDIMENT TRANSPORT IN THE JEZIORO KOWALSKIE RESERVOIR LOCATED IN THE GLOWNA RIVER
Joanna Jaskuła 1  
,   Joanna Wicher-Dysarz 2  
,   Tomasz Dysarz 2  
,   Mariusz Sojka 1  
 
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1
Instytut Melioracji, Kształtowania Środowiska i Geodezji, Wydział Melioracji i Inżynierii Środowiska, Uniwer-sytet Przyrodniczy w Poznaniu, ul. Piątkowska 94, 60-649 Poznań
2
Katedra Inżynierii Wodnej i Sanitarnej, Wydział Melioracji i Inżynierii Środowiska, Uniwersytet Przyrodniczy w Poznaniu, ul. Piątkowska 94, 60-649 Poznań
Publication date: 2015-07-25
 
Inż. Ekolog. 2015; 43:131–138
 
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ABSTRACT
The purpose of the presented research is the analysis of bed elevation changes caused by sediment accumulation in the Jezioro Kowalskie reservoir. The Jezioro Kowalskie reservoir is a two stage reservoir constructed in such a way that the upper preliminary zone is separated from the main part of the reservoir. The split of the reservoir parts is done with a small pre-dam, located in Jerzykowo town. The analysis of such a construction impact on changes of bed elevations in the reservoir in different flow conditions is presented. The HEC-RAS 5.0 Beta model is used for simulations. The sediment transport intensity is calculated from England-Hansen and Meyer-Peter and Muller formulae. The results showed the processes of sediment accumulation and slight erosion occuring in the preliminary zone of the reservoir. The choice of the flow intensity does not have a huge importance. Similar results are obtained for low as well as high flows. The results confirm, that two stage construction with separated preliminary zone is effective method preventing from the sedimentation of the reservoir.