Analysis of climate change impact on urban runoff by the TSR model

Abstract

The Tokyo Storm Runoff (TSR) model is applied for urban runoff analysis. The set-up of this TSR model is based on so-called urban landscape GIS delineation that faithfully describes the complicated urban land use features in detail. The TSR model was set up and evaluated for the Palmviken catchment in city of Arvika, Sweden. Modelling was performed using as inputs 60-minutes design storms with a return period of 10 years representing both today's and future climate. The future design storm generates more floods and also a bit upstream. It is possible that the additional flooding has a substantial impact depending on the type of buildings and activities in the flooded area.