People want to see, touch and play with water especially in urban environments on hot summer days. This concept is reflected in the works of Herbert Dreiseitl where water design invites children and adults to interact and play with water and water systems. On the other hand, most traditional stormwater management systems are intended to keep people away from and out of the water in response to liability fears. Yet, rainwater design can be created in ways that foster interaction with water without creating safety concerns by simply splitting runoff into gentile and shallow small flows and diverting the large flows away to safe locations. Such systems also allow the first flush to be easily diverted into infiltration and evapotranspiration facilities which more closely recreate the natural hydrological site processes.