Transboundary rivers and international lakes

This volume contains an inventory of transboundary rivers and international lakes in the ECE region, an identification of general characteristics and a general overview of routine monitoring and assessment practises in transboundary water course in the ECE region. Information has been obtained by the use of a questionnaire and other information sources. A total of 158 transboundary rivers and 14 lakes have been submitted to the inventory. In general, these are the water bodies with the largest transboundary impact or largest discharge. Only 27 rivers have an annual discharge exceeding 200 m3/s, with the Danube being the largest transboundary river in the ECE region. The dimensions (surface area, depth) of the submitted lakes varies greatly, indicating that there are large differences in character and vulnerability of the lakes.