Incorporation of snowmelt into joint probability event based rainfall-runoff modelling

Abstract

In the Australian context, the influence of snowmelt contribution to design flood estimates is typically considered negligible due to climatic and topographic conditions. However, there are some catchments in Victoria, New South Wales and Tasmania which receive significant annual snowpack depths. Design flood estimates for these catchments must incorporate the effects of this snowpack melting during a storm and contributing to the peak flow and volume of runoff entering the reservoir. This paper describes the incorporation of an event-based snowpack melting module sourced from the United States Bureau of Reclamation into the hydrologic model RORB, and its subsequent use in a joint probabilit..