World Meteorological Organization

Author: World Meteorological Organization (WMO)

The probable maximum precipitation (PMP), which is a fundamental parameter in the design of a vari- ety of hydrological structures, also has a key role in floodplain management, where it is made to corre- spond to the extreme potential risk of flooding at a given time and place. The present publication covers a wide range of methods which can be used to make PMP estimates and it draws heavily on international experience from many regions of the world. The previous edition was published by WMO in 1986 as an Oper- ational Hydrology Report.