Methodology for geohazard assessment for hydropower projects

Fjóla G. Sigtryggsdóttir*, Jónas Th Snæbjörnsson, Lars Grande, Ragnar Sigbjörnsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The paper presents a comprehensive methodology for a multihazard assessment, including an associated multihazard monitoring programme. An existing method in system theory is extended for multiple systems and used to demonstrate the importance of considering geohazard interrelations in the safety monitoring of reservoirs and dams. The method is applied to systems of geohazards and monitoring parameters. In both systems, there is a reservoir retained by one or more dams. Geohazards in hydropower project perspectives as well as monitoring opportunities are classified. The results are presented in a colour-coded matrix visually mapping ranked interrelations for the two systems. The methodology proposed provides a clear view on the prospective that individual geohazards may trigger other geohazards as well as on the geohazard-triggering potential of the reservoir itself. The warning potential of the possible monitoring parameters is also mapped and interrelated to the individual geohazards. The results demonstrate the importance of a comprehensive multidisciplinary monitoring programme for reliable operation and risk management of hydropower projects.

Original languageEnglish
Pages (from-to)1299-1331
Number of pages33
JournalNatural Hazards
Issue number2
Publication statusPublished - 1 Nov 2015

Bibliographical note

Funding Information:
Constructive comments from two anonymous reviewers improved the paper and are sincerely appreciated. The first author gratefully acknowledges the financial support from the Iceland Catastrophe Insurance and the Landsvirkjun (National Power Company of Iceland) Energy Research Fund.

Publisher Copyright:
© 2015, Springer Science+Business Media Dordrecht.

Other keywords

  • Dam
  • Geohazards
  • Hazard mitigation
  • Monitoring
  • Multihazard
  • Reservoir
  • System interrelations


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