Volume No. 12 Issue No.: 3 Page No.: 336-343 January-March 2018

 

CHALLENGES TO DAM : VALLEY INTEGRATED FLOODRISK MANAGEMENT IN BULGARIA

 

Daniela Zlatunova

Sofia University St. “Kliment Ohridski”,bul. "Tsar Osvoboditel" 15, 1504 Sofia (BULGARIA)

 

Received on : September 28, 2017

 

ABSTRACT

 

According to the requirements of the International Commission on Large Dams, the dams in Bulgaria are classified as large (216) and small (over 2000). The dams have a main positive role in Bulgarian water management and give a strong contribution to the society’s life quality improvement. At the same time, dams are also a potential danger for downstream valleys: whatever the cause and the probability of occurrence, a failure in the water retaining capability is always possible. The official check carried out at the beginning of 2017 founds that 205 dams create a potential flood hazard for downstream valleys. To protect them from such devastating flood disasters, practicing dam-valley integrated flood risk management at the river basin level becomes important. In this regard, the purpose of this publication is to analyze Bulgarian dam management practice (on the example of the Odrintsi dam) and on this basis to outline, the main challenges facing decision-makers when applying the new approach. A methodological approach based on the integrated dam safety and risk concept is applied. It includes dam and downstream valley as a system for management; zero-risk is not possible; dam risk and valley risk reduction measures need to be considered. The major finding of the research is the developed integrated dam-valley flood management plan to mitigate the flood risk. Dam risk and valley risk reduction measures according to the situations in the downstream valley are proposed. These measures include flood emergency planning, flood risk mapping, flood monitoring and early warning system construction, dam regulation, and flood risk public awareness.

 

Keywords : Bulgaria, Dam, Integrated flood management, Flood risk, Risk reduction measures

 

 

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