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

摘要: Cities worldwide are facing problems to mitigate the impact of urban stormwater runoff caused by increasing occurrence heavy rainfall events and re-densification. This study presents a new approach for estimating potential Management Urban STormwater at Block-level (MUST-B) decentralized blue-green infrastructures here called low-impact developments (LIDs) already existing environments. The MUST-B method was applied area in northern part City Leipzig, Germany. Study areas divided into blocks smallest functional units considering two different soil permeability three events, seven scenarios have been developed: current situation, surface infiltration, swale trench trough-trench combinations extensive roof greening, shaft infiltration. LIDs simulated their maximum retention/infiltration required estimated together with cost calculation. results showed that even 100 year event can be fully retained infiltrated within on low (kf = 10−6 m/s). differed depending scenario responded events. It is shown allows simple down- up-scaling process settings facilitates decision making implementing blue-green-infrastructure retain, store, infiltrate block level.