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Article

Management of Urban Stormwater at Block-Level (MUST-B): A New Approach for Potential Analysis of Decentralized Stormwater Management Systems

1
Centre for Environmental Biotechnology, Helmholtz Centre for Environmental Research GmbH–UFZ, 04318 Leipzig, Germany
2
DHI WASY GmbH, 1130 Vienna, Austria
3
Institute for Infrastructure and Resources Management, Leipzig University, 04109 Leipzig, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Francesco De Paola and Elena Bresci
Water 2021, 13(3), 378; https://doi.org/10.3390/w13030378
Received: 31 December 2020 / Revised: 26 January 2021 / Accepted: 27 January 2021 / Published: 31 January 2021
(This article belongs to the Special Issue Advances of Low Impact Development Practices in Urban Watershed)
Cities worldwide are facing problems to mitigate the impact of urban stormwater runoff caused by the increasing occurrence of heavy rainfall events and urban re-densification. This study presents a new approach for estimating the potential of the Management of Urban STormwater at Block-level (MUST-B) by decentralized blue-green infrastructures here called low-impact developments (LIDs) for already existing urban environments. The MUST-B method was applied to a study area in the northern part of the City of Leipzig, Germany. The Study areas was divided into blocks smallest functional units and considering two different soil permeability and three different rainfall events, seven scenarios have been developed: current situation, surface infiltration, swale infiltration, trench infiltration, trough-trench infiltration, and three different combinations of extensive roof greening, trough-trench infiltration, and shaft infiltration. The LIDs have been simulated and their maximum retention/infiltration potential and the required area have been estimated together with a cost calculation. The results showed that even stormwater of a 100 year rainfall event can be fully retained and infiltrated within the blocks on a soil with low permeability (kf = 10−6 m/s). The cost and the required area for the LIDs differed depending on the scenario and responded to the soil permeability and rainfall events. It is shown that the MUST-B method allows a simple down- and up-scaling process for different urban settings and facilitates decision making for implementing decentralized blue-green-infrastructure that retain, store, and infiltrate stormwater at block level. View Full-Text
Keywords: low-impact development (LID); decentralized stormwater management; potential analysis; stormwater modeling; urban block; urban water management low-impact development (LID); decentralized stormwater management; potential analysis; stormwater modeling; urban block; urban water management
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MDPI and ACS Style

Khurelbaatar, G.; van Afferden, M.; Ueberham, M.; Stefan, M.; Geyler, S.; Müller, R.A. Management of Urban Stormwater at Block-Level (MUST-B): A New Approach for Potential Analysis of Decentralized Stormwater Management Systems. Water 2021, 13, 378. https://doi.org/10.3390/w13030378

AMA Style

Khurelbaatar G, van Afferden M, Ueberham M, Stefan M, Geyler S, Müller RA. Management of Urban Stormwater at Block-Level (MUST-B): A New Approach for Potential Analysis of Decentralized Stormwater Management Systems. Water. 2021; 13(3):378. https://doi.org/10.3390/w13030378

Chicago/Turabian Style

Khurelbaatar, Ganbaatar, Manfred van Afferden, Maximilian Ueberham, Michael Stefan, Stefan Geyler, and Roland A. Müller 2021. "Management of Urban Stormwater at Block-Level (MUST-B): A New Approach for Potential Analysis of Decentralized Stormwater Management Systems" Water 13, no. 3: 378. https://doi.org/10.3390/w13030378

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