My friends at South Asia Network on Dams, Rivers and People (sandrp.in<\/a>) have done a heroic job in collating information about these landslides, their locations and impacts.\u00a0 I have used their information to produce a quick Google Earth map of the landslide locations:<\/p>\n A map of the landslides in the Maharastra area on India in late July 2021. Map based on information from Parineeta Dandekar of South Asia Network on Dams, Rivers and People<\/a>.<\/p><\/div>\n .<\/p>\n I have included two significant non-fatal landslides as well.\u00a0 It is interesting to compare the landslides to a map of the rainfall.\u00a0 The map below is a 3 day rainfall total for the period ending 24 July 2021 (the Taliye landslide occurred on 22 July 2021), from the NASA Global Precipitation Measurement mission:<\/p>\n 3 day accumulated rainfall for central India. This is GPM IMERG 3-day data from NASA, plotted using the visualizer<\/a>.<\/p><\/div>\n .<\/p>\n The cluster of high rainfall totals exactly where the landslides were triggered is clear.\u00a0 The map below (from Researchgate) shows the topography of Maharashtra:<\/p>\n The topography of Maharashtra, from Researchgate.<\/a><\/p><\/div>\n .<\/p>\n The map shows that there is higher elevation ridge running approximately parallel to the coastline.\u00a0 It is clear that the high rainfall totals reflect this ridge (presumably due to an orographic effect), and of course it also provides the topography for the landslides.\u00a0 The main landslide cluster is to the southeast of Mumbai (Bombay).<\/p>\n But why were there so many landslides? The answer may well lie, at least in part, in degradation of the environment. Removal of natural vegetation, cutting of slopes, quarrying and road building are taking a huge till across the upland areas of India (and indeed across the hilly parts of much of South Asia).\u00a0 As usual, in the aftermath of monsoon landslide disasters<\/a> there is discussion about warning systems and suchlike<\/a> (which in general have a very patchy success rate in rural settings in less developed countries).\u00a0 Although they can and do have a role, this is to miss the salient point, which is that we need to work on preventing increases in susceptibility as a priority, mainly through better management of slopes.<\/p>\n Climate change is going to exacerbate these problems at pace, as will continued damage to slopes.\u00a0 If we are to reduce these disasters, we need manage the slopes properly.<\/p>\n![\"A](\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/08\/21_08-Maharashtra-1.jpg\")
![\"3](\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/08\/21_08-Maharashtra-2.jpg\")
![\"The](\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/08\/21_08-Infdia-topography.jpg\")
Acknowledgement<\/h4>\n