For most H&H modeling software packages, a Thirsty Duck floating outlet and skimmer is commonly represented as a rating curve. Thirsty Duck staffers are experienced with most H&H modeling software packages and are available to assist engineers through the development of a custom rating curve using our design spreadsheet. We provide this service free of charge and without obligation. H&H software with which we are experienced includes SWMM, ICPR, PondPack, HydroCAD, WWHM, MGS Flood and more.