evidence: The roof of the World – so often translate the name of the Pamir mountain system. Pamir is located on the territory of Tajikistan, China, Afghanistan and Pakistan and closely connected with other highest mountain systems of the world – Tien Shan, Karakorum, Hindu Kush. Himalayas. In the Pamirs, there are several peaks with a height of more than 7000 m a.s.l. The highest point of the Pamirs – Kongur peak (7649 m) located in China (Fig. 1). [...] The diversity of climatic conditions in Central Asia, the patterns of changes in meteorological processes, depending on the geographic and geoecological features of the region leads to the need for climatic zoning. The Pamir Mountains is considered to be the area where the influence of moist, cold Mediterranean precipitation decreases and dry Central Asian commences. The main zone of generation of the Pyanj River and its main tributaries Gunt and Vanch rivers water flow is located in the Pamir Mountains (Fig. 2). [...] The territory of the Republic of Tajikistan is characterized by four climatic zones. In turn, the Gorno-Badakhshan Autonomous Region (GBAO) that covers almost the entire mountain Pamir and is a zone of formation of the Transboundary Pyanj River is characterized by three climatic conditions (Fig. 4).