Urban and Highway Stormwater Pollution

Dear colleagues,

Urban and highway stormwater pollution is today recognized as an important stressor for many natural water systems, thereby resulting in an impaired ecological status. A characteristic feature of stormwater runoff from these urbanized areas is the higher runoff volume, higher peak flow, and shorter time of concentration compared to the undeveloped state. From a management perspective, urban and highway stormwater runoff represent a significant challenge—both in terms of quantity and quality. Runoff events that occur are more or less stochastic, and volumes can be large. The associated pollutant concentration levels are typically low, but not insignificant. In addition, the pollutant levels are subject to significant spatial and temporal variability.

Methods for the management of urban and highway stormwater pollution are constantly developing as boundary conditions change, for example, new pollutants emerge, climate change influences the hydrological processes, and new legislative restrictions are implemented. This calls for integrated solutions that aim to reduce the runoff volume, minimize the flood risk, reduce the stormwater pollutant impacts, and decrease the stormwater treatment and pipe capacity costs.

The research area is highly multidisciplinary, covering areas such as urban hydrology, environmental chemistry, and process engineering. In this Special Issue of the MDPI journal Water, we seek contributions covering all aspects of urban and highway stormwater pollution. The relevant list of topics includes, but is not limited to. The following:

• Urban hydrological processes
• Urban drainage modelling
• Pollutant transport and transformation
• Centralized and decentralized management methods
• Urban drainage impacts on receiving waters.

Prof. Dr. Asbjørn Haaning Nielsen
Prof. Dr. Søren Liedtke Thorndahl
Guest Editors

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