Effect of Roof Surface Type on Storm-Water Runoff from Full-Scale Roofs in a Temperate Climate

rebecca.killalea@canberra.edu.au on 16 Feb 2022
Back to citations

All evidence records currently entered in EcoEvidEx for this citation are shown below.
An evidence record consists of an association between two variables, plus information about the nature of that relationship, the study design by which it was observed, and environmental context.
Click on an evidence record below to view or edit the complete evidence record.
Click 'Add evidence' to add a new evidence record for this citation, or copy an existing evidence record by selecting that record then using the 'Duplicate evidence' option.

Author(s)
Carpenter, D. D., & Kaluvakolanu, P.
Year
2011
Title
Effect of Roof Surface Type on Storm-Water Runoff from Full-Scale Roofs in a Temperate Climate
Source
Journal of Irrigation and Drainage Engineering
DOI
10.1061/(ASCE)IR.1943-4774.0000185
Volume
137
Issue
3
Pages
161-169
ISSN/ISBN
0733-9437,1943-4774
Abstract

Roof surfaces represent a significant portion of the impervious area associated with urban development. Storm-water runoff from those surfaces causes stream degradation in receiving waters attributable to excess volume of water runoff. This paper investigates the influence of roof surface type on storm-water runoff and specifically considers the benefits of a vegetated roof, or green roof, as a storm-water best management practice (BMP). Runoff data were collected over a 6-month period from three full-scale roofs, which were retrofitted with flow meters and automated water-quality samplers. The roof surfaces included an asphalt roof (for control purposes), a vegetated extensive green roof, and a stone ballasted roof. Both the green roof and stone roof were effective at reducing runoff volume and attenuating peak discharge, with the green roof being more efficient for rainfall events less than 2.54 cm. Overall, the green roof retained 68.25% of rainfall volume and reduced peak discharge by an average of 88.86%. Water-quality results were inconclusive, but did provide some indication that green roof systems could reduce nutrient loadings.

Evidence