Two years ago we finalised a new geospatial dataset for global surface waters together with the Center for Comparative and International Studies from ETH Zurich. The new dataset measures hydro-political dependencies in terms of how a riparian country is positioned relative to other countries in the same international river basin or in all basins, taken together, that it shares with other countries, and to what extent a river basin as a whole is up- or downstream dominated.
Visit a description of the INITIAL PROJECT.
The dataset is just about to being updated and ready for download soon.