Next Article in Journal
Analysis of a Stochastic Programming Model for Optimal Hydropower System Operation under a Deregulated Electricity Market by Considering Forecasting Uncertainty
Previous Article in Journal
Potential Threats from Variations of Hydrological Parameters to the Yellow River and Pearl River Basins in China over the Next 30 Years
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Water 2018, 10(7), 884; https://doi.org/10.3390/w10070884

Morphological Evolution of the Lower Tisza River (Hungary) in the 20th Century in Response to Human Interventions

1
Department of Physical Geography and Geoinformatics, University of Szeged, Egyetem u. 2–6, 6722 Szeged, Hungary
2
Lower Tisza District Water Directorate, Stefánia 4, 6720 Szeged, Hungary
*
Author to whom correspondence should be addressed.
Received: 10 May 2018 / Revised: 14 June 2018 / Accepted: 28 June 2018 / Published: 2 July 2018
(This article belongs to the Section Water Resources Management and Governance)
Full-Text   |   PDF [7625 KB, uploaded 2 July 2018]   |  

Abstract

To understand the hydro-morphological responses of a river to engineering works is a key to future sustainable engineering projects. The Tisza River in the Carpathian Basin has been the subject of human interventions in the 19th–20th centuries, with regular monitoring since the first intervention. Therefore, it provides a unique opportunity to understand the long-term responses of a lowland river on engineering works. Here the interventions include the construction of embanked levees, artificial meander cutoffs, construction of revetments and groynes, and construction of lock-dams, whose differing effects can be analysed in detail. The Lower Tisza River, Hungary was shortened by up to a third of its 89-km length during late-19th-century regulation works. Simultaneously, it was disconnected from its 10–20 km wide natural floodplain, which was restricted to 1–5 km. Revetments were constructed along 25% of the banks since the early 20th century. This paper evaluates the effects of these regulation works on the Lower Tisza channel based on channel-surveys (1891, 1931, 1961, 1976 and 1999). Based on the results, the channel responded to every stage of the regulation works by adjusting its cross-sectional area, thalweg depth and bankfull width. From 1891 to 1961, the cross-sectional area of the channel increased in response to the artificial meander cutoffs through rapid incision and channel widening. The construction of revetments and groynes distorted this morphological development. After their construction, the cross-sectional area of the channel reduced by up to 50% between 1961 and 1976. The channel experienced incision and narrowing within this period. Whilst the morphological response of the river to cutoffs was improved flood conveyance, the revetments drastically decreased the flood conveyance; therefore, the flood levels increased without an increase in discharge, so the revetment constructions indirectly increased the flood risk. View Full-Text
Keywords: human intervention; channel cross-sectional area; artificial cutoffs; meanders; revetments human intervention; channel cross-sectional area; artificial cutoffs; meanders; revetments
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Amissah, G.J.; Kiss, T.; Fiala, K. Morphological Evolution of the Lower Tisza River (Hungary) in the 20th Century in Response to Human Interventions. Water 2018, 10, 884.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top