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Comparing the hydrological performance of blue green infrastructure design strategies in urban/semi-urban catchments for stormwater management

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Název: Comparing the hydrological performance of blue green infrastructure design strategies in urban/semi-urban catchments for stormwater management
Autoři: Adhikari, Utsav, Broekhuizen, I., Pons, V., Sun, Z., Deak Sjöman, J., Randrup, T. B., Viklander, M., Blecken, G.-T.
Zdroj: Water Science and Technology. 90(9):2696-2712
Témata: blue green infrastructure, flooding, infiltration, stormwater management, urban hydrology, VA-teknik, Urban Water Engineering, Centrumbildning - Centrum för dagvattenhantering (DRIZZLE), Centre - Centre for Stormwater Management (DRIZZLE)
Popis: Blue green infrastructure (BGI), in recent decades, have been increasingly recognized as robust stormwater control measures to reduce urbanflooding, promote infiltration, and restore a catchment’s flow to its pre-development stage. However, studies comparing the hydrologicalbenefits of BGI alternatives at catchment scale are often limited to single catchment or single/few BGI options scaled over a catchment.This study designed a set of BGI alternatives as a combination of different BGI facilities in terms of the following: (a) spatial distributionscale (end-of-pipe vs. decentralized) and (b) naturalness scale (less engineered vs. more engineered), in three different urban catchmentsrepresenting an inner city, a residential suburb, and a new urban housing. In addition, their hydrological performances were compared.A 10-year return period design rain and a continuous rain series of 11 years were modelled for each BGI alternative using the computermodel stormwater management model (SWMM). It was observed that in most catchments, decentralized alternatives (both engineeredand natural) showed better potential to reduce the magnitude and frequency of flooding than centralized measures. Similarly, the testeddecentralized natural, less engineered alternatives showed higher potential to increase infiltration than the decentralized engineered alternativesin all three catchments. Meanwhile, infiltration-based BGI alternatives showed similar potential to mimic pre-development flow as otherdecentralized BGI alternatives.
Popis souboru: electronic
Přístupová URL adresa: https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-111012
https://doi.org/10.2166/wst.2024.346
Databáze: SwePub
Popis
Abstrakt:Blue green infrastructure (BGI), in recent decades, have been increasingly recognized as robust stormwater control measures to reduce urbanflooding, promote infiltration, and restore a catchment’s flow to its pre-development stage. However, studies comparing the hydrologicalbenefits of BGI alternatives at catchment scale are often limited to single catchment or single/few BGI options scaled over a catchment.This study designed a set of BGI alternatives as a combination of different BGI facilities in terms of the following: (a) spatial distributionscale (end-of-pipe vs. decentralized) and (b) naturalness scale (less engineered vs. more engineered), in three different urban catchmentsrepresenting an inner city, a residential suburb, and a new urban housing. In addition, their hydrological performances were compared.A 10-year return period design rain and a continuous rain series of 11 years were modelled for each BGI alternative using the computermodel stormwater management model (SWMM). It was observed that in most catchments, decentralized alternatives (both engineeredand natural) showed better potential to reduce the magnitude and frequency of flooding than centralized measures. Similarly, the testeddecentralized natural, less engineered alternatives showed higher potential to increase infiltration than the decentralized engineered alternativesin all three catchments. Meanwhile, infiltration-based BGI alternatives showed similar potential to mimic pre-development flow as otherdecentralized BGI alternatives.
DOI:10.2166/wst.2024.346