Evaluation of the impacts of road runoff in a Mediterranean reservoir in Portugal
| Autor: | João Nuno Fernandes, Rute Vieira, Ana Estela Barbosa |
|---|---|
| Přispěvatelé: | G. B. Wiersma |
| Rok vydání: | 2013 |
| Předmět: |
Pollution
Geological Phenomena Rain media_common.quotation_subject Impact assessment Drainage basin Diffuse pollution Transportation STREAMS Management Monitoring Policy and Law Water Supply Water Movements Water Pollutants Road runoff General Environmental Science media_common Pollutant Hydrology geography geography.geographical_feature_category Portugal Land use Agriculture General Medicine Water quality Environmental science Sample collection Surface runoff Environmental Monitoring |
| ISSN: | 0167-6369 |
| Popis: | Road runoff is a linear diffuse source of pollution, with very specific characteristics. This study intends to improve the understanding of road runoff impacts in water bodies in Portugal. The chosen case study is S. Domingos reservoir catchment. The study analyzed land uses, the presence of pollution sources, and gathered temporal water quality data and performed site measurements and sample collection. The water quality data for the reservoir was provided by the national water quality monitoring system from the Portuguese Water Institute. The parameters selected were TSS, COD, NO3 −, Cl− , and Cu. The results obtained revealed that the presence of IP6 highway at S. Domingos catchment affects the water quality; however, the impacts are not significant due to the high dilution effect of the reservoir volume. Agriculture, the main land use of the catchment, is responsible for introducing pollutants such as TSS, Cl−, COD, N, and P in the local water streams and at the reservoir. TSS, COD, and Cu are pollutants generated by the road. The success of the study was very much dependent on the availability of 12 years of historic water quality data for S. Domingos reservoir, and the use of the moving average method. Taking into consideration the high variability of hydrological variables in Mediterranean climates, the concentration of pollutants in the water bodies must always be assessed in a significant time period. 17 ISSN 0167-6369; DOI 10.1007/s10661-013-3126-2 volume 185; n.º 9 DHA/NRE Environmental Monitoring and Assessment |
| Databáze: | OpenAIRE |
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