The following Pacific Rim Streamflow Data Set is a outgrowth of a collaborative research program at UCLA and the Center for Study of Hydroclimatology of the Pacific Rim (CHPR). The streamflow data has been compiled with the assistance of researchers in Pacific Rim countries. All of the data represents natural (unimpaired) average monthly streamflow. Complete details are available in the help files (readme.htm) for each country. The data can be accessed by selecting a country from the list.