Policy analysis of water management for the Netherlands. Vol XVII: Flood safety model for the IJssel lakes

Some of the tactics considered in PAWN involve raising the water level in two large freshwater lakes (the IJsselmeer and Markermeer) in order to store more fresh water for use in the summer dry period. This volume describes models that PAWN developed and used to estimate the change in safety, as measured by the probability of flooding, which would result from these tactics. Two models, the IJsselmeer Filling Model and the Dike Safety Model, are described and the reliability of the results obtained by using these models are discussed.PAW

Protecting an estuary from floods: A policy analysis of the Oosterschelde. Vol 2: Assessment of security from flooding

The second volume in a series of reports describing the methodology and results of a joint research venture between RAND and the Netherlands Rijkswaterstaat. The POLANO project was founded to help the Dutch government analyze the different alternatives (open, closed, and storm-surge barrier cases) for protecting the Oosterschelde region from North Sea floods. Volume II describes the methodology developed to estimate the likelihood and severity of flood damage to people, property, and land under each of the alternatives. These are subjected to many simulated threats expressed in terms of storm water levels. The methodology's damage estimates compared favorably with the actual damage observed in a severe 1953 storm. Also assessed is the reliability of the storm-surge barrier. The report demonstrates how security varies, in both the long-run and construction periods, with changes in the alternatives and assumptions.Polan

Protecting an estuary from floods: A policy analysis of the Oosterschelde. Vol 1: Summary report

The first volume in a series of reports describing the methodology and results of a joint research venture between RAND and the Netherlands Rijkswaterstaat. The POLANO project was founded to help the Dutch government analyze the different alternatives (open, closed, and storm-surge barrier cases) for protecting the Oosterschelde region from North Sea floods. Volume I describes the approach and summarizes the results of the complete analysis. The many impacts of each alternative--including financial costs, flood security, ecological changes, and selected economic and social effects--are presented and compared through the novel use of colored scorecards. The report shows how the impacts vary with changes in the design of the alternatives and in certain assumptions. This work, combined with special studies by the Rijkswaterstaat, was the foundation of the report on which the Parliament based its selection of an alternative in June 1976.Polan