RT Report T1 Methodology for the GEF Transboundary Waters Assessment Programme. Volume 4: Methodology for the Assessment of Transboundary River Basins A1 United Nations Environment Programme, A1 Transboundary River Basins Group, PB United Nations Environment Programme SN 978-92-807-3118-7 YR 2011 FD 2011 LK https://wedocs.unep.org/handle/20.500.11822/9307 UL https://wedocs.unep.org/handle/20.500.11822/9307 NO This report describes the methodology for the assessment of transboundary river basins prepared by the Transboundary River Basins Group (hereafter referred to as the River Basins Group). It is an output of the Medium-Sized Project (MSP) of the Transboundary Waters Assessment Programme (TWAP), with implementation of the assessment to be undertaken in the next phase (Full Size Project – FSP). The MSP is funded by the Global Environment Facility (GEF) and implemented by UNEP. DS UN Environment Document Repository RD Sep 17, 2026