Assessing the Return Periods and Hydroclimatic Parameters for Rainwater Drainage in the Coastal City of Cotonou in Benin under Climate Variability

Table 2

Hazen probability and return period of the extreme rainfall events between 1999 and 2018.

Year	Hazen empirical probability	Rainfall intensity (mm/h)	Return period (year)
2010	0.975	96.800	40.0
2013	0.925	93.800	13.4
2003	0.875	88.000	8.0