Hydraulic Impacts on Urban Drainage Systems due to Changes in Rainfall Caused by Climatic Change
Publication: Journal of Hydrologic Engineering
Volume 17, Issue 1
Abstract
Changes in climate were a growing concern during the last decade and will be even greater in the coming years. When investigating the impact from changes in the climate on urban drainage systems, two challenges are (1) what type of input rainfall data to use and (2) what parameters to use to measure the impacts. The overall objective of this study is to investigate the hydraulic performance of urban drainage systems related to changes in rainfall, and through these hydraulic parameters describe the impact of climate change. Input rainfall data represent today’s climate and three future time periods (2011–2040, 2041–2070, and 2071–2100). The hydraulic parameters used were water levels in nodes (e.g., as the number of floods, and frequency and duration of floods) and pipe flow ratio. For the study area, the number of flooded nodes and the geographical distribution of floods will increase in the future, as will both the flooding frequency and the duration of floods.
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Acknowledgments
This work was financially supported by FORMAS (the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning), which is gratefully acknowledged. Thanks to Kalmar Vatten AB for permission to use the urban drainage model, and to Jonas Olsson at the Swedish Meteorological and Hydrological Institute (SMHI) for help with the delta change method.
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Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 17 • Issue 1 • January 2012
Pages: 92 - 98
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jun 10, 2010
Accepted: Mar 31, 2011
Published online: Dec 15, 2011
Published in print: Jan 1, 2012
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