Surface water: inflow secured through treaties
Long-term average quantity of water annually entering the country through transboundary flow (rivers, canals, pipes) which is secured through formal agreements or treaties. An example of the calculation rules is available in this sheet: http://www.fao.org/nr/water/aquastat/data/wrs/readPdf.html?f=AFG-WRS_eng.pdf.
Climate, water resources
View data for this variable  in the AQUASTAT Main Database