Fig. 7. Runoff hydrographs of selected representative (A) light (1.27 mm), (B) medium (4.06 mm), and (C) heavy (10.08 mm) rain events recorded at 5-min intervals. Lines represent either rainfall (mm) or runoff (mm) from vegetated green roof platforms set at a 2% roof slope with 2.5 cm of media (2%–2.5 cm), 2% roof slope with 4 cm of media (2%–4 cm), 6.5% roof slope with 4 cm of media (6.5%–4 cm), or 6.5% roof slope with 6 cm of media (6.5%–6 cm). Values are averages of three replications measured using tipping bucket rain gauges mounted at the research site.