Assessment on the Effectiveness of Urban Stormwater Management

Abstract

Stormwater management is a key urban issue in the world, in line with the global issues of urban sprawl and climate change. It is urgent to investigate the effectiveness in managing stormwater with different strategies for maintain urban resilience. A method based on a storm water management model (SWMM) was developed for assessing the control of stormwater runoff volume and the percentage removal of suspended solids by implementing a Sponge City strategy. An interdisciplinary approach was adopted incorporating Low Impact Development (LID) with urban Green Infrastructure and Gray Infrastructure paradigms in a typical old residential community in Suzhou, China. Four types of sponge facilities for reducing stormwater runoff were bio-retention cells, permeable pavements, grassed pitches, and stormwater gardens. The simulation results indicate that the stormwater pipe system can meet the management standard for storms with a five-year recurrence interval. The volume capture ratio of annual runoff is 91% and the reduction rate of suspended solids is 56%. This study demonstrates that Sponge City strategy is an effective approach for managing stormwater, particularly in old and densely populated urban areas. Implementing spongy facilities with a LID strategy for stormwater management can significantly enhance urban water resilience and increase ecosystem services.

Evaluation of Satisfaction with Spatial Reuse of Industrial Heritage in High-Density Urban Areas: A Case Study of the Core Area of Beijing’s Central City

“…Different from the well-known large industrial zones such as Shougang and 798, the eight samples cover a smaller area but have a higher building density, mostly small factories or plants of light industries or handicraft industries. The plant covers an area of 0.2-0.8 hectares in general, and the transformation direction is to become a public space with diversified functions, which, to some extent, carries the diversified demands of the high-density population [11]. With the above principles in mind, eight final samples were selected as follows (Table 1).…”

“…Yihao Wu focused on urban forms in high-density environments [9]. Public space, which has been the focus of several scholars such as Yuelai Liu, Shu Zhang, and Rui Liang, is also an important research direction in high-density urban environments [10][11][12]. Sajjad, Muhammad systematically studied high-density resilient urban systems [13].…”

Fecal Contamination and High Nutrient Levels Pollute the Watersheds of Wujiang, China

“…The structure and connectivity of watersheds have been proven to be highly influenced by the local hydrological cycle and biogeochemical processes in the watershed [9]. Additionally, watersheds act like sponges for cities, reducing the risks associated with flooding [10]. Watersheds and urban water systems in China face various environmental and human health challenges.…”

Modelagem hidrológica e hidráulica usando o SWMM - Storm Water Management Model na bacia urbana do Riacho Fundo I - Distrito Federal

“…Ferramentas, como a modelagem hidrológica e hidráulica, trouxeram avanço na gestão dos sistemas de drenagem urbana. O modelo SWMM -Storm Water Management Model pode ser aplicado desde as fases de planejamento e análise dos sistemas existentes, como também no dimensionamento de novas estruturas, inclusive com a aplicação de medidas de Desenvolvimento de Baixo Impacto (Low Impact Development-LIDs) (Zhang et al, 2020;Broekhuizen et al, 2019;Xu et al, 2018;Barros et al, 2016). Além disso, o SWMM permite a simulação do fluxo nos condutos por meio da onda dinâmica, que considera os efeitos de remanso, fluxo reverso, fluxo a superfície livre e sob pressão, comum em sistemas de drenagem sobrecarregados, e gera resultados mais precisos.…”