Institute of Ecosystem Studies

2008 BES Annual Meeting Presentation and Poster Abstracts

Preliminary comparisons of local greenroof runoff to traditional roof runoff for storms of varying intensity and frequency
starry, olyssa
Co-Authors: Olyssa Starry
Abstract: Greenroofs are low impact designs (LIDS) that are being installed in cities to address a number of environmental concerns including excessive stormwater runoff. In Baltimore, for example, new buildings must retain one inch of stormwater onsite in order to be permitted; greenroofs are now considered an acceptable technology to achieve this retention by the Maryland Department of the Environment. However, there is still much to be learned about the how much runoff is associated with greenroofs for storms of given frequency and duration. Very little in known about the quality of stormwater leaving greenroofs. This poster present preliminary analyses of runoff from the greenroof on the Herring Run Watershed Association building in BelAir and compares these to runoff data from a typical Baltimore rowhome without a greenroof. Runoff from storms of different frequencies and intensities are compared.