Abstract:
India accounts for 20 % of global landslides ,mostly because of the young Himalayan mountain
range. Approximately 11,000 deaths have occurred in last 12 years which is really alarming figure .
For monitoring landslide , Close Range Photogrammetry was used and two different sets of data
( Pre-monsoon and Post-monsoon ) were taken to analyse the change in the volume and surface area
of the Kesharwala ( near Dehradun ) landslide. The detailed and comparative study of the 2 models
reviewed the surface area has increased from 75701.5 meter square ( Pre-monsoon )to 78903.4
meter square . Where as there has been an evident loss in the volume of the landslide as the change
on volume obtained is about 836732.89 M^3 . The average precipitation in Dehradun is about
1802.1 mm and this considerable change in the volume can slowly convert this passive landslide
into an active one.
