Abstract. The FRIEND-Water program (FWP) is the oldest and the most
transverse program (i.e. Flagship Initiative) within the Hydrological
Intergovernmental Program (IHP) from UNESCO. FRIEND means “Flow Regimes
from International and Experimental Network Data”. The FWP is dedicated to
allow large communities of hydrologists and associated disciplines to
collaborate across borders on common shared data and scientific topics which
are addressed through large world regions. The program has evolved in its 35
years of existence. There are 8 large regions in the world which gather
tenths of hundreds of researchers, and organize events following several
research topics defined according to each region priorities. The FWP is
chaired by a scientific committee gathering regional coordinators and
thematic experts. Each region gives its research priorities which evolve
according to the projections given by the member States during the IHP
council every year. The future activities of the FWP are defined by the
upcoming IHP IX program and with the support of the newly created
Montpellier UNESCO Category II Center ICIREWARD, acting as FWP Secretariat.