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Article

Assessing the Impact of Storm Drains at Road Embankments on Diffuse Particulate Phosphorus Emissions in Agricultural Catchments

Institute for Water Quality and Resource Management, Technische Universität Wien, Karlsplatz 13/226, 1040 Wien, Austria
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Water 2019, 11(10), 2161; https://doi.org/10.3390/w11102161
Received: 8 September 2019 / Revised: 10 October 2019 / Accepted: 12 October 2019 / Published: 17 October 2019
(This article belongs to the Special Issue Monitoring, Modelling and Management of Water Quality)
This study presents a simple mapping key suitable for quick and systematic assessments of the types of agricultural and civil engineering structures present in a certain agricultural catchment as well as the impact they may have on the spatial distribution of critical source areas. An application of this mapping key to three small sub-catchments of a case study catchment with an area of several hundred square kilometres (one-stage cluster sampling) in Austria clearly reveals that road embankments with subsurface drainage can exert a major influence on emissions and transport pathways of sediment-bound pollutants like particulate phosphorus (PP). Due to this, the semi-empirical, spatially distributed PhosFate model is extended to separately model PP emissions into surface waters via storm drains along road embankments. Furthermore, the overall share of road embankments with subsurface drainage on all road embankments in the case study catchment is inferred with the help of a Bayesian hierarchical model. The combination of the results of these two models shows that the share of storm drains at road embankments on total PP emissions ranges from about one fifth to one third in the investigated area. View Full-Text
Keywords: diffuse pollution; field mapping; storm drains; Bayesian statistics; distributed modelling; PhosFate diffuse pollution; field mapping; storm drains; Bayesian statistics; distributed modelling; PhosFate
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MDPI and ACS Style

Hepp, G.; Zessner, M. Assessing the Impact of Storm Drains at Road Embankments on Diffuse Particulate Phosphorus Emissions in Agricultural Catchments. Water 2019, 11, 2161. https://doi.org/10.3390/w11102161

AMA Style

Hepp G, Zessner M. Assessing the Impact of Storm Drains at Road Embankments on Diffuse Particulate Phosphorus Emissions in Agricultural Catchments. Water. 2019; 11(10):2161. https://doi.org/10.3390/w11102161

Chicago/Turabian Style

Hepp, Gerold; Zessner, Matthias. 2019. "Assessing the Impact of Storm Drains at Road Embankments on Diffuse Particulate Phosphorus Emissions in Agricultural Catchments" Water 11, no. 10: 2161. https://doi.org/10.3390/w11102161

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