Development of streamflow drought indices in the Morava river basin

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F19%3AN0000072" target="_blank" >RIV/00020699:_____/19:N0000072 - isvavai.cz</a>

Result on the web

<a href="https://uhmi.org.ua/conf/danube_conference_2019/papers_abstracts/Electronic_Book_Danube_Conference_2019_2.pdf" target="_blank" >https://uhmi.org.ua/conf/danube_conference_2019/papers_abstracts/Electronic_Book_Danube_Conference_2019_2.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Development of streamflow drought indices in the Morava river basin

Original language description

The territory of Czechia currently suffers from a long-lasting drought period which has been a subject of many studies, including the hydrological ones. Previous works indicated that the basin of the Morava River, a left-hand tributary of the Danube, is very prone to the occurrence of dry spells. It also applies to the development of various hydrological time series that often show decreases in the amount of available water. The purpose of this contribution is to extend the results of studies performed earlier and, using the most updated daily time series of discharge, to look at the situation of the so-called streamflow drought within the basin. 46 water-gauging stations representing the rivers of diverse catchment size were selected where no or a very weak anthropogenic influences are expected and the stability and sensitivity of profiles allow for the proper measurement of low flows. The selected series had to cover the most current period 1981–2018 but they could be much longer, which was considered beneficial for the next determination of the development direction. Various series of drought indices were derived from the original discharge series. Specifically, 7-, 15- and 30-day low flows together with deficit volumes and their durations were tested for trends using the modifications of the Mann–Kendall test that account for short-term and long-term persistence. In order to better reflect the drivers of streamflow drought, the indices were considered for summer and winter seasons separately as well. The places with the situation critical to the future water resources management were highlighted where substantial changes in river regime occur probably due to climate factors. Finally, the current drought episode that started in 2014 was put into a wider context, making use of the information obtained by the analyses.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10501 - Hydrology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Electronic book with full papers from XXVIIІ Conference of the Danubian Countries on Hydrological Forecasting and Hydrological Bases of Water Management

ISBN

978-966-7067-37-3

ISSN

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e-ISSN

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Number of pages

14

Pages from-to

119-132

Publisher name

Ukrainian Hydrometeorological Institute

Place of publication

Kyjev

Event location

Kyjev

Event date

Nov 6, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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