Recently, it has become possible to make more accurate estimates of rainfall using observations from satellites to enhance ground-based data. This publication presents the findings of a project in which representatives of the hydrometeorological services of six Himalayan countries carried out quantitative validation of the satellite rainfall estimates (CPC-RFE2.0) obtained from NOAA climate prediction centres at the national and regional levels, and tested a rainfall-runoff model (GeoSFM) to predict discharge. The project had technical support from the United States Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA), and funded by the United States Agency for International Development Office for US Foreign Disaster Assistance (USAID/OFDA). The results provide an important first step in the use of this new methodology in the region to reduce the impact of water-related disasters. The publication is provided on a CD-ROM together with a short summary booklet.