Thursday, September 5, 2024

Survey of parts of the Teesta Valley (Part I) in Sep2024 - Impact of a landslide on 20Aug2024 at NHPC Stage V Power Station complex at Baluatar (Singtam)-Sikkim.

NHPC has a large residential/administrative complex at Baluatar (Singtam), SIkkim (27 15 1.8 N  88 27 34.1 E) parts of which were severely damaged by the 04Oct 2023 GLOF. We have done an extensive photo report of the area here
The area also houses the power station complex of the NHPC (510MW) Stage V (Dikchu) dam which was also severely damaged by the GLOF and which we have covered in our report here
On 20Aug2024, a major landslide occurred approximately below Dipu Dara, a small hamlet on the Singtam-Dikchu road which damaged the GIS building of the power station:
Report from 'The Telegraph' on the landslide and our update.
The GIS building of the Dikchu (Stage V) power house which was severely damaged by the landslide on 20Aug2024 (photo dated 19Nov2023). The landslide occurred from behind the white building.
This technical complex adjacent the GIS building was totally buried by the landslide on 20Aug2024 (photo dated 19Nov2023).
Dipu Dara village and the landslide at the power station. Dipu Dara residents recollect hearing a loud rumble at around 7.30am on 20Aug2024.
The damaged GIS building and buried adjacent technical structures. The bridge at the extreme right hand, lower corner has been newly constructed after the old one was washed away last year (see below)
NHPC bridge across Teesta river which was destroyed in 04Oct2023 GLOF (photo dated 19Nov2023).
Close up view of the landslide and Dipu Dara. There are 5 homes in the vicinity of the landslide crown which had been evacuated and the Dikchu - Singtam road seen here was closed for 6 days. Locals say the area was a sinking zone and some blame NHPC tunnels but the fact is that rainfall was not a trigger for this landslide.
View of the landslide and parts of the NHPC complex at Baluatar (Singtam), Sikkim which lie across the Teesta river. During and soon after the landslide on 20Aug, there were rumors that the landslide had dammed the river but the width of the valley here is huge as can be seen in this photo.
The Dikchu-Singtam road at Dipu Dara (27 15 8.0 N  88 27 38.7 E, elevation 577.2m). This section of the road was closed for 6 days after 20Aug204 and the traffic diverted thru an alternate route. The landslide took place directly below this place which some locals say was always a sinking area.

Documentation of the above report supported by Royal Enfield, as part of their Social Mission Initiative


Praful Rao
SaveTheHills
savethehills@gmail.com
9475033744