by 30% over the next 100 years. The confidence interval for this
estimate is 5–
75% (Arnbjerg-Nielsen 2012). This large uncertainty on design criteria
has little influence, when drainage systems are constructed in new urban areas,
because the marginal cost of implementing extra drainage capacity is very low. Hence, often
an increase of 50% drainage capacity can be achieved for 10% of the overall
/media/loftslag/2012-Refsgaard_etal-uncertainty_climate-change-adaptation-MITI343.pdf