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Water 2018, 10(7), 860;

Simulation of Rain Garden Effects in Urbanized Area Based on Mike Flood

State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China
School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Author to whom correspondence should be addressed.
Received: 13 May 2018 / Revised: 21 June 2018 / Accepted: 26 June 2018 / Published: 28 June 2018
(This article belongs to the Section Urban Water Management)
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An urban storm and surface water pollution model (MIKE FLOOD) was used to assess the impact of rain gardens on water quantity and quality for an urban area in Xi’an. After the rain garden measures were added, the results show that: (1) In the case where the total proportion of rain gardens was 2%, the overflow reduction rate was 6.74% to 65.23%, the number of overflow points reduction rate was 1.79% to 65.63%, the overload pipes reduction rate was 0% to 11.15%, the runoff reduction rate was 1.93% to 9.69%; (2) Under different rainfall conditions, the load reduction rate of suspended solids (SS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) were 2.36% to 30.35%, 2.37% to 30.11%, 2.34% to 30.08%, and 2.32% to 31.35%, respectively; (3) The submersion ranges of different submerged depths and submerged durations were reduced by 0.30% to 64.18% and 7.12% to 100%, respectively. The statistics of the automatic modeling and intelligent analysis system (AMIAS) showed that the rain garden regulation range of the waterlogging risk area was 0.78% to 100%. The rain garden has a good control effect on urban storm runoff in terms of water volume and water quality, but as the rainfall recurrence interval increases, the control effect will decrease. View Full-Text
Keywords: rain garden; MIKE FLOOD; urban waterlogging; non-point source pollution rain garden; MIKE FLOOD; urban waterlogging; non-point source pollution

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Li, J.; Zhang, B.; Li, Y.; Li, H. Simulation of Rain Garden Effects in Urbanized Area Based on Mike Flood. Water 2018, 10, 860.

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