Nepal second-flood update: lower barrier lake drains, new Trishuli damage reported
KATHMANDU, August 31 — Reports that a lower barrier lake near the Nepal–China border has drained mark a change in the flood emergency, but they do not establish that every upstream lake has emptied or that downstream travel is safe. Fresh damage along the Trishuli was reported on Sunday even as the drainage assessment emerged.
For readers following “second flood” warnings, three developments need to be distinguished: the condition of the impounded water, renewed river rises, and damage to roads and bridges. One does not automatically explain or cancel the others.
Lower and upper lakes are not the same update
China’s Ministry of Water Resources said natural channels had released almost all of the roughly two million cubic metres held behind the reported blockage. Its emergency monitoring assessment described normal outflow from that lake.
Separately, scientist Nitesh Khadka described photographs showing the lower lake drained, while more than half the water in an upper lake had flowed out. “More than half” is not confirmation that the upper lake was empty.
What changed downstream on Sunday
The August 30 reports recorded erosion along riverbanks in Nuwakot and Dhading. At Krishnabhir, erosion and a subsequent landslide blocked the Muglin–Kathmandu section of the Prithvi Highway. A suspension bridge connecting Ghyachok in Gorkha with Charaudi in Dhading was also reported swept away.
These are dated damage reports, not a current road-opening certificate. No verified reopening notice for that blocked section was established in the material checked for this article.
Authorities also sent phone warnings on Sunday after China notified Nepal of increased upstream flow. That alert concerned a river rise; it should not be transformed into a confirmed catastrophic failure of an engineered dam.
What residents and travellers should check now
No verified notice cancelling all downstream warnings was established for this update. A drainage announcement is therefore not a basis for returning to an evacuated riverbank or crossing a damaged route.
Nepal’s Department of Hydrology and Meteorology provides current flood information and lists the toll-free number 1155, with option 2 for flood early warning. Local administration and police instructions should govern immediate movement.
When sharing a warning, retain its issue time, river and district. An old alert with a new social-media caption can look current; equally, a reassuring update about one lake should not be presented as reassurance for an entire river corridor.
Archive location photograph: the Trishuli River viewed downstream from Mugling, 19 March 2012. The bridge pictured is not the Ghyachok–Charaudi bridge described in this report, and this image does not show the current flood. Photo: Sundar1, Wikimedia Commons, CC BY-SA 3.0.
