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Modeling the impacts of urbanization pattern, climate change and nature-based solutions for storm water management on surface water quality in a peri-urban catchment in Portugal
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Urban areas may act as important diffuse pollution sources since surface runoff during rainfall events could wash off a large amount of pollutant from urban surface and transport them to streams. This process could be facilitated in the climate change context due to potential changes in hydrological processes such as precipitation and evaporation. Peri-urban catchments are usually characterized by rapid urbanization and therefore facing great challenges of water quality degradation. In this study, the storm water Management Model (SWMM) was calibrated and used to investigate the potential influences of i) urban patterns, ii) climate change in terms of precipitation and evaporation, and iii) nature-based solutions for storm water management on copper and zinc loadings from roads to streams in a small Portuguese peri-urban catchment. The model showed a good hydrological performance (NSE > 0.76) and accuracy in simulating pollutant loading (on average 87% for copper and 89% for zinc) during the validation. Scenarios results showed sprawl urban pattern led to less pollutant loadings but higher event mean concentrations in surface runoff than a compact urban pattern. Urban patterns may also affect the temporal distribution of pollutant loadings over the simulation period. Higher precipitation in future climate could lead to an increase in toxic metal loads. Vegetative swales, used as storm water management measures, showed a better performance on pollutant removal than reducing surface runoff. 

Place, publisher, year, edition, pages
2017. , p. 42
Series
Examensarbete vid Institutionen för geovetenskaper, ISSN 1650-6553 ; 2017/19
Keywords [en]
Sustainable Development, hydrology, modeling, surface water quality, peri-urban catchment
National Category
Natural Sciences Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-324485OAI: oai:DiVA.org:uu-324485DiVA, id: diva2:1110962
Subject / course
Sustainable development
Educational program
Master Programme in Sustainable Development
Presentation
2017-05-31, Geocentrum, Villavägen 16,, Uppsala, 17:20 (English)
Supervisors
Examiners
Available from: 2017-06-19 Created: 2017-06-16 Last updated: 2017-06-19Bibliographically approved

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fulltext(2905 kB)252 downloads
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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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  • Other locale
More languages
Output format
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