Stormwater infrastructure – be it pipes, ponds, or rain gardens – is typically designed to convey or capture runoff flows associated with a design storm, the magnitude of which is based on a probability distribution of observed rainfall events.  One of the underlying assumptions of this design approach is that the rainfall probability distribution is static.  However, recent climate trends across much of the country indicate large events are occurring with greater frequency, casting doubt on (1) the notion of a rainfall distribution that is static in time and (2) that stormwater infrastructure designed by our current design storm approach [...]