Green Roof Water Retention Modeling by SWMM

Abstract

Green roof capability of rainwater runoff retention by accumulating it in storage layers and conduction back in atmosphere by evapotranspiration is studied and modeled in this paper. Modeling is done in Stormwater Management Model 5.0 (SWMM) software. Model is based on existing warehouse type building located in Riga and hourly Riga climatic data of 2012. Evaluation of model is carried and future study fields of green roof ecological benefits are discussed