Since the Little Ice Age, the altitude and latitude range of the Earth's cryogenic formations has been steadily narrowing and expressed in a progressive reduction of the glaciosphere (IPCC 2019). 

In response to global climate trends, glaciation of Altai has been in a steady regression for a century and a half, and glaciers are showing a negative mass balance and reducing the occupied area (Narozhniy & Zemtsov 2011, Nosenko et al 2014). 

The modern glacial degradation in the Altai is accompanied by the formation of glacial lakes (GL), the number of which increases in proportion to the rate of glaciation reduction (Borodavko et al 2018; Meimei Zhang et al 2018). 

The climate-related transformation in the periglacial zone leads to significant changes in the parameters of GL, loss of dams stability and as a result, evoke a GLOF (Clague & Evans 2000, Haeberli 2013) 

Given the risk posed to downstream communities and infrastructure in deglaciating ranges worldwide, there has been an intensification of research interest in GLOFs, with many such studies seeking to estimate GLOF hazard or risk for individual lakes or in specific regions of the world (Huggel et al 2004; McKillop & Clague 2007; Bolch et al 2008; Worni et al 2013; Cook et al 2016; Rounce et al 2016; Frey et al 2016; Petrov et al. 2017;). 

Three GLOF events have been recorded in Russian Altai in recent decades (Bykov 2013; Dokukin 2015) but a full inventory and hazard assessment of GL in Altai however lackin