Simulating future trends in urban stormwater quality for changing climate, urban land use and environmental controls.
The effects of climatic changes, progressing urbanization and improved environmental controls on the simulated urban stormwater quality in a northern Sweden community were studied. Future scenarios accounting for those changes were developed and their effects simulated with the Storm Water Management Model (SWMM). It was observed that the simulated stormwater quality was highly sensitive to the scenarios, mimicking progressing urbanization with varying catchment imperviousness and area. Thus, land use change was identified as one of the most influential factors and in some scenarios, urban growth caused changes in runoff quantity and quality exceeding those caused by a changing climate. Adaptation measures, including the reduction of directly connected impervious surfaces (DCIS) through the integration of more green spaces into the urban landscape, or disconnection of DCIS were effective in reducing runoff volume and pollutant loads. Furthermore, pollutant source control measures, including material substitution, were effective in reducing pollutant loads and significantly improving stormwater quality.
Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden E-mail: matthias.borris@ltu.se.
Matthias
M
Borris
Maria
M
Viklander
Anna-Maria
AM
Gustafsson
Jiri
J
Marsalek
D057231:Climate Change; D004784:Environmental Monitoring / Q000379:methods*; D052918:Environmental Restoration and Remediation; D008962:Models, Theoretical; D011891:Rain; D012621:Seasons; D013548:Sweden; D014507:Urbanization; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*; D060753:Water Quality
D014874:Water Pollutants, Chemical