Abstract
Abstract. Directive 2007/60/EC of the European Parliament and of the Council of 23 October 2007 on the assessment and management of flood risks (the Flood Risk Directive) signifies that flood risk analysis methods are gaining ground in EC Member States and, therefore, also in the Czech Republic (CR). Procedures of flood risk analysis have been developed in the Czech Republic since the catastrophic floods of 1997 in line with European and worldwide trends and have been tested and applied in hundreds of case studies to date. Currently, the Flood Risk Directive Guideline based on past experience with flood risk analysis applications is being processed. The aim of the paper is to present flood risk analysis procedures and specially developed techniques for the assembly of flood hazard, danger and flood risk maps. Methods related to flood risk management plans are briefly mentioned as well. The following particular problems are discussed in more detail: an application and extension of the "danger matrix" approach, the definition of residual danger, the formulation of efficiency criteria and preliminary multi-criteria flood risk assessment. These issues were tested in practical applications at pilot locations in the Czech Republic. Present experience provides evidence that the flood risk analysis methods used in the Czech Republic are in harmony with the requirements of the Flood Risk Directive. The proposed and applied methods are based primarily on existing available data such as flood extent maps, cadastral maps, the Register of Census Districts and Structures and others.
Highlights
Experience from extreme flood events in the Czech Republic during recent years has shown the necessity for a systematic approach to flood protection
We focus on the process of implementing the Flood Risk Directive in the Czech Republic
In the paper the flood risk techniques corresponding to Flood Risk Directive 2007/60/EC of the European Parliament and of the Council on the assessment and management of flood risks are discussed in the context of implementing the Flood Risk Directive within the context of the conditions present in the Czech Republic
Summary
These methods enable the identification of endangered areas and the consecutive, effective design of flood protection measures (FPMs). The Flood Risk Directive requires three stages of flood risk management It is essential that the flood risk assessment methods in the Czech Republic are founded on existing and well-established data and procedures This prerequisite principle has resulted in the necessity of modifying and adapting existing techniques, e.g. the “danger matrix” approach, to define residual danger and to formulate efficiency criteria. The objectives of the paper are to introduce the philosophy of Flood Risk Directive implementation in the Czech Republic and to present the way in which the general requirements have been met. The paper is structured as follows: after introducing its aims, the three stages of Flood Risk Directive implementation are presented, which is the most comprehensive part of the text. At present it is planned that a detailed description of these methods will be part of the Guidelines (MA CR, 2009) which have recently been elaborated (see the following sections)
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