| Issue |
E3S Web Conf.
Volume 163, 2020
IV Vinogradov Conference “Hydrology: from Learning to Worldview” in Memory of Outstanding Russian Hydrologist Yury Vinogradov
|
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|---|---|---|
| Article Number | 03004 | |
| Number of page(s) | 6 | |
| Section | Geoecological Research and Protection of Water Bodies: What are the Limits – Imperfection of Water Legislation or Ignorance of the Processes? | |
| DOI | https://doi.org/10.1051/e3sconf/202016303004 | |
| Published online | 17 April 2020 | |
Seasonal dynamics of nutrients and organic matter in urban stream
Lomonosov Moscow State University, Faculty of Geography, GSP-1, 1 Leninskiye Gory, 119991, Moscow, Russia
* Corresponding author: oxana.erina@geogr.msu.ru
The study presents the results of water quality evaluation in the Setun River watershed, located entirely within the limits of the Moscow City. Multiple point and non-point sources of pollution cause the nutrient and organic matter content of the river and its tributaries to significantly differ from the natural background. Maximum nitrogen and phosphorus concentrations were observed at the upper reaches of the river during the summer low flow due to the landfill impact. Because of the extreme nutrient pollution at the river’s upper course, subsequent water inflow, even from significantly polluted tributaries, has a diluting effect, and the nutrient concentration decreases downstream. The effect of urbanization on the organic matter content is reflected in elevated COD and BOD values that exceed the national environmental guidelines. Seasonal dynamics of organic matter content includes increased organic matter during snowmelt and its relatively low content during summer.
© The Authors, published by EDP Sciences, 2020
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