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Open AccessArticle

Choosing the LID for Urban Storm Management in the South of Taiyuan Basin by Comparing the Storm Water Reduction Efficiency

by Tingting Cui 1,2,3, Yuqiao Long 1,4,* and Yintang Wang 1
1
Hydrology and Water Resources Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China
2
College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
3
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210098, China
4
Nanjing R&D Tech Group Co., Ltd., Nanjing 210029, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(12), 2583; https://doi.org/10.3390/w11122583
Received: 14 November 2019 / Revised: 4 December 2019 / Accepted: 4 December 2019 / Published: 7 December 2019
(This article belongs to the Section Urban Water Management)
Low impact development (LID) is a storm management philosophy. This paper aims at choosing the LID for urban storm management by comparing the efficiency in the south urban district in the Taiyuan Basin. Firstly, we set up a 1D–2D model to simulate the hydrological and hydraulic process of the area. Then the efficiency of different LID scenarios was analyzed by ratio of surcharging pipeline, percentage of ponding road, external outflow, infiltration, surface runoff, facility storage, and LID area ratio. It was found that the continuous porous pavement and rain garden are beneficial for use in residential and commercial settings in urban areas, and the rain garden performs more effectively and efficiently than the continuous porous pavement. The area occupied by LID might be under 20% of the impervious building area, because the LID performance was not improved significantly with the LID area when the ratio exceeded 20%. The LIDs could be more useful for small return periods and short duration storms, and could not replace conventional runoff management practices and drainage systems. View Full-Text
Keywords: urban storm water management; low impact development; PCSWMM; rain garden; continuous porous pavement urban storm water management; low impact development; PCSWMM; rain garden; continuous porous pavement
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Cui, T.; Long, Y.; Wang, Y. Choosing the LID for Urban Storm Management in the South of Taiyuan Basin by Comparing the Storm Water Reduction Efficiency. Water 2019, 11, 2583.

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