World Bank
Transport notes series
Roads & Highways Thematic Group
March 2010
Geohazards can result in significant loss of human life as well as cause extensive damage to infrastructure. The magnitude and frequency of geohazard events ranges from earthquakes and tsunamis to landslides and flash floods. In the most severe cases involving the low frequency but more intense geohazards like earthquakes or tsunamis, the primary concern, ex ante, is on the minimization of the potential loss of life and property, damage to infrastructure, and ensuring continuity in the functionality of public and private services. In the higher frequency, lower impact, geohazards, such as landslides, flash floods, and rockfall, proper planning remains vital, but is often overlooked in transition and developing economies. In the transport sector, proper planning for this category of geohazards can realize significant
savings in construction costs, avoiding cost over-runs, repair costs and costly delays, and subsequent maintenance costs.
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