Cost-benefit analysis for flood risk management and water governance in the Netherlands: an overview of one century
For the first time, an overview of this well-developed practice is provided in this report. This overview includes the cost-benefit analysis in the 1901 act for enclosure of the Zuiderzee, Van Dantzig’s famous formula for the economically optimal strength of dikes and a whole set of cost-benefit analyses for ‘More room for rivers and the ‘Delta Program’ for the next century. Dutch practice illustrates how cost-benefit analysis can support and improve flood risk management and water governance; other countries may learn from this. Calculations indicate that investing in cost-benefit analysis has been highly profitable for the Dutch society.