Unmanned Aerial Vehicles and Terrestrial Laser Scanning are used to Monitor Kshetrapal landslides in the Chamoli Hazard Areaof Upper Himalayan Region in Uttarakhand, India.

The Himalayan belt includes the geologically unstable mountainous terrain of upper Uttarakhand, which is distributed throughout Sonprayag, Sitapur, Rampur, Barasu, Kalimath, Madhyamaheshwar, Chamoli, Birahi, Byasi, and Atali.

There are many more mountain ranges in the region. The rains that fall during the monsoon season are the most common cause of landslides in this mountain chain, whereas earthquakes and aftershocks are the least common cause. Hill slopes are becoming unstable as a result of human involvement in nature,

which includes activities such as cutting roads without following scientific principles, dumping garbage along roadsides, using landslide , deformation, and illegal mining operations, among other things. Once the prone regions have been identified and hazard zonation maps have been prepared, it will be possible to protect the different entitlements that are at risk due to the landslip threat.

The current investigation is an inventory-based technique that makes use of satellite data in order to determine the grey regions that exist within the region. The topo sheets of India, the geological maps that are already in existence, the data from remote sensing, the historical landslip data from 2010 to 2023, and the field inspection were all done. It is possible to construct primary topographic data with the use of a Digital Elevation Model (DEM), which includes aspects, slopes, curvatures, hill shades, mean curvatures, plan curvatures, relief, and drainage density respectively.  Afterwards, a Landslip Hazard Zonation (LHZ) Map is created by superimposing several theme layers. This is done in order to facilitate the process of making logical decisions and to facilitate the implementation of mitigation measures in advance of an occurrence. The observed landslip is mostly composed of rock and boulder falls as well as debris flow. Within this complex network of mountain ranges, there are significant dynamic sites that need the attention of scientists for further investigation. The findings will be disseminated to catastrophe authorities and governmental organizations in order to facilitate the development of contingency plans for dealing with future occurrences.