Monitoring and statistical modelling of the solids accumulation rate in gully pots

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Gully pots are utilized for conveying runoff to drainage systems, as well as for reducing the system’s solids loading by retaining suspended solids. However, the accumulation of solids in gully pots reduces their removal efficiency, leading to an increase in solids transport towards the drainage system. This article aims to identify the main drivers of the solids accumulation in gully pots and, thus the relevant processes for wash-off models. The solids accumulation rates in 407 gully pots were monitored within a period of ~14 months and were analysed by means of a linear mixed model and a regression tree. The parameters vegetation factor, rainfall volume, and filling degree are the main drivers of the accumulation process. These parameters are linked to the solids build-up in a catchment, solids transport, and solids retention in gully pots, which means that none of these 3 processes is dominant.

Original languageEnglish
Pages (from-to)549-559
Number of pages11
JournalUrban Water Journal
Issue number6
Publication statusPublished - 2020


  • catch basin
  • field data
  • Gully pot
  • maintenance
  • solids
  • urban drainage


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