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Table 1

Summary of the annual number of stormwater discharges and rainfall events in the period 2008–2017

YearNumber of discharges by overflow calculated (SWMM)/measuredNumber of discharges forecasted by logit modelNumber of rainfall events
2008 13/15 14 43 
2009 15/16 16 47 
2010 17/18 19 47 
2011 19/20 19 51 
2012 21/13* 20/14* 36 
2013 22/13* 20/13* 41 
2014 29/16* 28/16* 44 
2015 26 26 58 
2016 22 21 44 
2017 17 17 38 
YearNumber of discharges by overflow calculated (SWMM)/measuredNumber of discharges forecasted by logit modelNumber of rainfall events
2008 13/15 14 43 
2009 15/16 16 47 
2010 17/18 19 47 
2011 19/20 19 51 
2012 21/13* 20/14* 36 
2013 22/13* 20/13* 41 
2014 29/16* 28/16* 44 
2015 26 26 58 
2016 22 21 44 
2017 17 17 38 

where: numbers of stormwater discharges for years 2008–2011 were obtained using continuous simulations, *outflow events for 2012–2014 were acquired on the basis of observed DC maximal filling.

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