Assessing Green Roofs for Stormwater Management in Western Washington

Abstract

Interest in the use of green roofs for stormwater flow control (among other benefits) has increased both internationally and locally. Taylor Associates has been conducting hydrologic monitoring of runoff from a number of green roofs for Seattle Public Utilities over the last three years. The intent of this monitoring is to help determine the potential benefits from the use of green roofs in reducing combined sewer overflows and stormwater runoff in general. This presentation will present the data collection methods and variation in hydrologic responses seen at a number of green roofs in Seattle.