public static Hydrograph CalculateSbuh2Year(Catchment catchment)
{
//Define design storms
RainfallEvent rainfallEvent = RainfallEvent.GetScsOneAEvent("Two-Year", 2.4);
Hydrograph imperviousHydrograph = SantaBarbaraUrbanHydrograph.CalculateHydrograph
(catchment, rainfallEvent);
return imperviousHydrograph;
}