Frequent earthquakes occurred in Khao Phang Subdistrict, Ban Ta Khun District, Surat Thani Province, near the dam.Ratchaprapha Dam11 km away. Officials rushed to inspect the dam's stability and confirmed no impact was detected.
On 11 Feb 2026, the websiteEarthquake Surveillance Divisionreported earthquake events in the country with the epicenter in Khao Phang Subdistrict, Ban Ta Khun District, Surat Thani Province, caused by the Khlong Marui fault group.
At 08:58, magnitude 2.4 at 1 km depth.
At 09:12, magnitude 2.9 at 1 km depth.
At 09:14, magnitude 1.9 at 4 km depth.
At 09:58, magnitude 2.3 at 3 km depth.
At 12:26, magnitude 2.3 at 1 km depth.
Mr. Wirat Phuchang, Assistant Director of Ratchaprapha Dam-1, along with executives and staff, conducted an onsite inspection of the dam ridge following the earthquake on 11 February 2026 at 09:12, with the epicenter located in Khao Phang Subdistrict, Ban Ta Khun District, Surat Thani Province. The magnitude was 2.9 at 1 km depth, approximately 11 km northwest of Ratchaprapha Dam.
The dam’s stability was checked through visual inspection according to the earthquake emergency response plan and Dam Safety Remote Monitoring System (DS-RMS). The inspection confirmed that this earthquake had no impact on the stability of Ratchaprapha Dam, Bang Lang Dam, or other dams managed by EGAT.
