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ISSN 2029-7092 online
ISBN 978-609-457-690-4 CD
ISBN 978-609-457-640-9
 Water Engineering

Saulius Vaikasas, Raimundas Baublys, Ramūnas Gegužis

Riverbed stability assessment under Lithuanian conditions

Conference Information: 9th International Conference on Environmental Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA
Source: ICEE-2014 - International Conference on Environmental Engineering
Book Series: International Conference on Environmental Engineering (ICEE) Selected papers
ISSN: ISSN 2029-7092 online
ISBN: 978-609-457-640-9 / 978-609-457-690-4 CD
Year: 2014
Publisher: Vilnius Gediminas Technical University Press Technika

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In many cases riverbed self-regulation processes are similar in natural and canalized channels, however dynamic equilibrium is steady in natural rivers, while hydrodynamics processes are in progress in regulated ones. Prof. Grischanin’s criterion M was used as one of the criteria to evaluate bed stability of natural and regulated rivers. This hydrodynamics criterion is widely known and used in large rivers of the former USSR, but it has not been sufficiently studied under Lithuanian natural conditions. The following research showed that values of this criterion are close to 1 (0.9 +/–0.12) in small natural rivers of Lithuania, and much lower or higher in regulated ones. This indicates that the natural riverbeds are relatively stable, while recovery processes of riverbeds are still in progress in canalized streams. We consider that Grischanin’s stability criterion M could assess recovery level of river beds.

Keywords:regulated streams; rivers bed stability; Grishanin’s criterion.

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