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Article

Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach

by
Dejana Đorđević
1,*,
Enikő Anna Tamás
2,
Ljubiša Mihajlović
3,
Csaba Abonyi
4,
Aleksandar Vujanović
5 and
Béla Kalocsa
6
1
Faculty of Civil Engineering, University of Belgrade, 11000 Belgrade, Serbia
2
Faculty of Water Sciences, University of Public Service, H-6500 Baja, Hungary
3
Directorate for Inland Waterways, Ministry of Construction, Transport and Infrastructure, 11000 Belgrade, Serbia
4
Lower Danube Valley Water Authority, H-6500 Baja, Hungary
5
Saobraćajni Institut CIP d.o.o., 11000 Belgrade, Serbia
6
Palustris Co., H-6500 Baja, Hungary
*
Author to whom correspondence should be addressed.
Appl. Sci. 2023, 13(18), 10513; https://doi.org/10.3390/app131810513
Submission received: 16 August 2023 / Revised: 11 September 2023 / Accepted: 14 September 2023 / Published: 21 September 2023
(This article belongs to the Special Issue Sediment Transport)
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Abstract

The subject of this study is an approximately 300 km long Middle Danube River reach that spans from river kilometer (rkm) 1581 in Hungary to (rkm) 1255 in Serbia. The observed drying of floodplains in Hungary some thirty years ago initiated the hydrological studies. However, problems related to the navigation route maintenance of the Danube River and those in the water supply of irrigation and drainage canal networks are now present in the whole free-flowing middle Danube region. The study aims at investigating the correlation between the observed water level decrease and recorded incision of the river bed at gauging stations and the indirect estimation of the long-term sediment transport along the sand-bed reach based on the surveillance cross-sections’ data collected during regular monitoring surveys on the navigable Danube. It starts with hydrological analyses of the 70-year-long time series of water level and discharge yearly data and continues with morphological and correlation studies. It ends with the estimation of sediment transport. The decreasing trend in water levels and the increasing trend in cross-sectional areas are persistent. There is a linear correlation between the two. Longitudinal changes in sediment transport indicate the existence of both degrading and aggrading riverbed reaches.
Keywords: low water levels; incision of riverbeds; sand bed; surveillance cross-sections; indirect estimation of sediment transport low water levels; incision of riverbeds; sand bed; surveillance cross-sections; indirect estimation of sediment transport

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MDPI and ACS Style

Đorđević, D.; Tamás, E.A.; Mihajlović, L.; Abonyi, C.; Vujanović, A.; Kalocsa, B. Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach. Appl. Sci. 2023, 13, 10513. https://doi.org/10.3390/app131810513

AMA Style

Đorđević D, Tamás EA, Mihajlović L, Abonyi C, Vujanović A, Kalocsa B. Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach. Applied Sciences. 2023; 13(18):10513. https://doi.org/10.3390/app131810513

Chicago/Turabian Style

Đorđević, Dejana, Enikő Anna Tamás, Ljubiša Mihajlović, Csaba Abonyi, Aleksandar Vujanović, and Béla Kalocsa. 2023. "Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach" Applied Sciences 13, no. 18: 10513. https://doi.org/10.3390/app131810513

APA Style

Đorđević, D., Tamás, E. A., Mihajlović, L., Abonyi, C., Vujanović, A., & Kalocsa, B. (2023). Estimation of Changes in Sediment Transport along the Free-Flowing Middle Danube River Reach. Applied Sciences, 13(18), 10513. https://doi.org/10.3390/app131810513

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