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The ten-year development of vegetation cover of the Bečva river flood channel with special regard to ecotones
Lacina, Jan
During the disastrous flood in July 1997 the Bečva river created notable flood channels, which are considerably more complex and wider than the previous technically designed one. In the fall of the vegetation period in 1997 the six most interesting segments between towns Valašské Mežiříčí and Přerov were chosen and left in further natural development. During 10 years the processes of spontaneous succession have been examined by means of repeated phytosociological records on the investigative transects which have been located on various habitats. Dynamic development of river channel and its vegetation communities (from grassy-herbal heath to flood-plain forest and its ecotones) differentiated by hydrologic conditions, topography and grain-size distribution is very notable on the transect near Osek nad Bečvou. It is indisputable that the high-magnitude flood revitalizated the riverine landscape, diversified its character and contributed to the higher biodiverisity.
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Flooding in the Czech Republic in 2002 from the perspective of victims and helpers: implications for the organization of the help, psychosocial aspects of the help
Kohoutek, Tomáš ; Urbánek, Tomáš ; Čermák, Ivo ; Špok, Dalibor ; Navrátil, Marek
A survey of 492 households, which were struck by floods in the Czech Republic in 2002, has been carried out in collaboration with the Czech Caritas in winter of 2003/2004 in all the struck regions of the Czech Republic. Structured interview technique administered by interviewers was chosen and supplemented with several scales and was focused on the issues of the course of the flood, impact on the household, of the provided and needed help, and of the psychological impact of the event. Within another part of the research, professional helpers reflected their own experience too. The results are focused primarily on the issues of the needs of the victims in relation to the impact of deluges, on the organization of the help, on the impact of deluges on the minds of victims, and on the psychosocial aspects of the aid.
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The Central-European record precipitation and floods in Central Europe at the end of July 1897
Munzar, Jan ; Ondráček, Stanislav ; Elleder, L.
In 2007 we have commemorated the 10th anniversary of the natural disaster in July 1997, which affected a number of countries in Central Europe. In the Czech Republic it was the "flood of the century". A certain analogy was an extreme event which was recorded exactly a hundred years ago, in the summer of 1897, i.e. already before 110 years. While the then hitherto records of multiday total precipitation amounts were broken in July 1997, the 1-day amount of 345.1 mm measured on the Nová Louka station in the Jizerské hory Mts. on 29 July 1897 was not beaten. It is therefore the Czech -and most likely also at least the Central-European- record until there days. The extreme rains in the summer of 1897 resulted in high water which affected a considerable part of Central Europe. In the territory of the today’s Czech Republic the floods occurred namely in the Upper Labe (Elbe) R. Basin.
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Cause and consequences of destructive floods in time of upland colonisation in 13. a 14. Century
Hrádek, Mojmír
Villages originated during medieval coloniozation of uplands in 13. and 14. Century were affected by floods from heavy rainfalls. Some of them or their parts were demaged. Attention was devoted to analyse of gullies and alluvial fans in neighbourhood of deserted village of Bystřec in Drahanská vrchovina Upland. The question was discussed whether decisive role in floods and rainfalls origin had human impact linked to colonization or climatic changes.
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Great Historical Floods in South Bohemia and their Impacts
Munzar, Jan ; Ondráček, Stanislav
The first plausible records about the occurrence of historical floods in South Bohemia originate from the 16th century (e.g. in June 1582). However, should we investigate about the last high water approximately comparable with the flood of 2002, we would arrive at the year 1890. This indicates that the contemporary event occurred after a time lapse of 112 years. The end of the 19th century and the beginning of the 20th century saw an increased occurrence of great floods. In addition to year 1890, the most severe high waters occurred for example in 1880, 1897, 1903 etc. Following the great flood on the Vltava (Moldau) River in 1888, there were great floods or more important high waters in South Bohemia arriving in regular 2-year intervals in the period of the following eight years, i.e. in 1890, 1892, 1894 and 1896. The present period of the increased occurrence of great floods is therefore a certain analogy.
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Extreme hydrological phenomenons in landscape
Kallabová, Eva ; Munzar, Jan
Extrémní hydrologické jevy (povodně) jsou nejobvyklejší přírodní katastrofy; přesto i v souvislosti s nimi dochází k rychlé ztrátě historické paměti. Dochovanými připomínkami starých extrémních povodní v krajině jsou mj. různé formy hmotných památek, zejména povodňové značky či památníky obětem povodní. Jejich dokumentace, klasifikace a popularizace je jedním z pokusů obnovy historické paměti ve smyslu nutného neustálého připomínání existujících rizik současné (a budoucí) populaci.
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