Rasuwa Flood, 26 August 2026: The Overland Kailash Route Is Closed for This Season

At about nine o'clock on the morning of Wednesday 26 August 2026, a wall of water came down the Bhote Koshi from the Tibetan side and hit Timure and Syabrubesi. No rain had been recorded at the district headquarters. The river simply arrived.

I am writing this the same day, so some of what follows will change. The casualty figures are not known yet. The full damage is not known yet. What I can tell you with confidence is what this means for anyone with a trip booked through Rasuwa this season, because that part is already clear, and because I was standing at that border eleven days ago.

The short version: the overland route to Kailash through Rasuwagadhi and Kerung is finished for 2026. Not delayed. Finished for this season. If you are holding an overland Kailash booking for September, October or November, read the section below before you do anything else.

What actually happened

The surge entered the Bhote Koshi at around 9am and moved down into the Trishuli. The Bhote Koshi rises in Tibet, which is why this can happen on a dry morning in Nepal with no warning at all. There was no storm to watch. There was no rising river to give anyone an hour to move.

What has been reported so far:

• The market area at Timure was hit, along with the Timure Customs Office.
• Syabrubesi was hit. This is the town every Langtang trek starts from.
• The helipad at Timure was swept away, which meant rescue helicopters could not land where they were most needed.
• Hydropower projects along the river were damaged. The Chilime project was damaged and at least one project was washed away. Rasuwagadhi Hydropower halted generation as the river rose.
• Five districts were put on alert: Rasuwa, Nuwakot, Dhading, Gorkha and Chitwan, with the warning extended downstream as far as Muglin. Authorities urged closure of sections of the Prithvi and Tribhuvan highways.

The Chief District Officer, Narendra Pariyar, said plainly: "We have received reports that the flood came suddenly. We do not yet know the extent of the damage." A high-level team led by Finance Minister Swarnim Wagle was sent to coordinate search and rescue.

The suspected cause is a glacial lake outburst in Tibet. I want to be careful here, because the internet is already full of people stating this as settled fact. It is not settled yet. It is the strong early suspicion, and it is what the absence of rainfall points to, but the investigation is still running. I will update this page when there is a confirmed answer rather than repeat a guess.

Why I am telling you the route is closed and not delayed

Because this has happened before, on the same river, thirteen months ago, and we all watched how long it took.

On 8 July 2025, at around three in the morning, water drained out of a supraglacial lake on the Puripu Glacier in Tibet and came down the same valley. ICIMOD later traced that lake back to a small pond that had formed at the end of December 2024 and grown through June 2025. Seven bodies were recovered. At least twenty people were missing, including six Chinese nationals and three Nepal Police personnel. Fifty-five people were rescued.

That flood took the Miteri Bridge, the friendship bridge that physically connects Nepal and China at Rasuwagadhi. It took a Bailey bridge on the Galchhi to Betrabati to Syabrubesi road. It destroyed sixty-four vehicles sitting at the border, including twenty-three cargo containers and thirty-five electric vehicles waiting to be driven into Nepal. The Timure dry port took around sixty per cent damage. The dam at the 111 MW Rasuwagadhi Hydropower Project was severely damaged. The road between Syabrubesi and Rasuwagadhi was cut in more than ten places.

Here is the part that matters for anyone planning a trip. One-way traffic on that road resumed after thirteen days. The replacement bridge, a 91-metre Bailey bridge built with Chinese support and rated to 55 tonnes, was not installed until 27 December 2025. The border did not reopen properly for trade and transit until early 2026. That is close to six months from the water arriving to the crossing working again.

So when I say the overland season is gone, I am not being dramatic and I am not guessing. I am using the only precedent any of us have, on the same river, at the same crossing, with the same kind of damage. Even in the best case, where the bridge has survived and only the road is cut, we are looking at weeks. In the case that actually happened last time, we are looking at months. Either way it runs past the end of the autumn Kailash season.

What this does to Kailash Mansarovar in 2026

Almost every overland Kailash yatra out of Kathmandu goes the same way. You drive north through Rasuwa, you cross into Tibet at Rasuwagadhi, you clear immigration and you spend a night or two at Kerung acclimatising before the long drive west to Saga and on to Manasarovar and Darchen. That is the route. It is the cheapest way to reach the mountain, it acclimatises people gently, and it is what most pilgrims from Nepal and India actually book.

That door is shut. The road on our side is damaged, the customs area at Timure has been hit, and the crossing itself cannot carry vehicles while the approach is broken. Nothing goes through Rasuwagadhi until the road and the bridge are both usable, and both have to be built rather than cleared.

The other historic crossing, Kodari, is not the answer people hope it is. It has not functioned as a working passenger route for third-country pilgrims for years, and it is not something I would sell anyone a yatra on this season.

Two of our own tours are directly affected. Our 15-day Kailash Mansarovar Tour and our 14-day Overland Yatra via Tibet both cross at Rasuwagadhi and both stop at Kerung. Neither can run overland for the rest of this year, and I would rather tell you that here than let you find it out in October.

What still works

The western route is untouched. It does not go anywhere near Rasuwa.

You fly Kathmandu to Nepalgunj, then Nepalgunj to Simikot in the far west, then continue to Hilsa on the border and cross there into Purang. That corridor is a completely different part of the country, several hundred kilometres away, and this flood has no bearing on it whatsoever.

Our 11-day Kailash Mansarovar Helicopter Tour uses this corridor in both directions. It flies Hilsa back to Simikot and Nepalgunj at the end rather than driving out through Tibet, so it is unaffected from the first day to the last.

A correction to my own first version of this page, made the same evening. I wrote earlier today that our 20-day Kailash Trek via Simikot was equally unaffected. That is only half right, and I would rather correct it than leave it standing. The trek walks in through Simikot, the Nara La pass and Hilsa, and none of that is touched. But as the itinerary is written, its last two days drive back out through Kerung, which is the crossing that has just closed. So the way in is fine and the way out needs changing. That is a fixable problem rather than a serious one, because a group can leave the way it came or fly out from Hilsa as the helicopter tour does, but it is a real change to the trip and anybody holding that booking should hear it from me now rather than find it out at Saga.

I will be honest about the trade-off rather than sell it to you as an upgrade. The western route costs more, because you are buying two or three sectors of domestic flying instead of a bus, and because the Simikot to Hilsa leg is flown by helicopter. It is also more weather-dependent: Simikot and Hilsa sit in a corner of Nepal where flights are cancelled regularly, so you need spare days built in. What it gives you in return is a real crossing that is open, and a shorter drive on the Tibet side.

The third option is to fly into Lhasa and travel out west from there. It is the most expensive of the three and it adds days, but it exists.

One thing that has not changed, and that I keep having to repeat to people who ring me hoping this is their opening: the route you take does not affect the permit. Kailash runs on its own permit and its own quota, decided by your passport nationality. Coming in through Simikot instead of Kerung does not get an Indian passport holder around the 2026 quota, which is full. It is a travel decision, never an eligibility workaround. Anybody telling you otherwise is selling you something they cannot deliver.

If you have already booked an overland yatra

Not with us necessarily. With anyone. Here is what I would do, in this order.

Ask your operator one specific question, in writing: which border are you crossing at, and what is your plan if Rasuwagadhi is not open. Not "is my trip still on", because you will get a reassuring answer. Ask which crossing and what the alternative is. An operator who has thought about it will answer in a sentence. An operator who has not will change the subject.

Do not let anyone move you to a departure date later in the season on the assumption that the road will be fixed by then. That is the assumption that will cost people money this autumn. Last time the road took thirteen days to carry one-way traffic and the bridge took nearly six months. A November departure through Rasuwagadhi is not a safer bet than a September one. It is the same bet.

Do not buy a Chinese visa yet if you have not already. This is worth saying regardless of the flood. Anyone crossing overland from Nepal travels on a Chinese group visa issued in Kathmandu, and issuing it cancels any existing Chinese visa in that passport. A multi-entry visa bought in advance is not a head start. It is destroyed. That is checkable with the Chinese Embassy in Kathmandu and most operators never mention it.

Ask what happens to your money. The Tibet side takes payment in advance, which is exactly why refunds on cancelled yatras are slow and partial rather than instant. That is not an excuse and I am not defending it, but you should know it before you are arguing about it.

Langtang, Gosaikunda and the Tamang Heritage Trail

I have written a separate and fuller piece on what this flood means for trekking in that region, including which river actually flooded and the three questions that will decide October, here. What follows is the short version.

Syabrubesi is not just a place on the way to Tibet. It is the trailhead for the whole Langtang region. Our Langtang valley trek, our Langtang and Gosaikunda trek and our Tamang Heritage Trail all start and finish there, and the Tamang Heritage route runs north through Thuman and Briddim, which are the villages closest to Timure.

I am not going to tell you today whether October trekking in Langtang is affected, because I do not know yet and neither does anyone else. What I can tell you is what I am watching, and what I will be telling our own October trekkers as soon as I have real answers rather than early reports:

• Is the road to Syabrubesi open? That is the Pasang Lhamu Highway and it is the one that matters. Trekking in Langtang is fine if you can get to the trailhead.
• How much of Syabrubesi itself is standing? The lodges there are where every group spends its first night.
• Are the trails above the town damaged? The Langtang trail climbs away from the river almost immediately, so it may well be untouched even where the valley floor is not.

There is one useful thing worth knowing now. The short Gosaikunda trek does not go through Syabrubesi at all. It goes in via Dhunche, higher up and on a different road, and it climbs to the lakes from there. If you want the Langtang region in October and Syabrubesi turns out to be the problem, that is a real alternative rather than a consolation prize. Gosaikunda is a sacred lake at 4,380 metres and it is a genuinely good trek in its own right.

I would rather move somebody to a route that works than run a trip through a town that is still digging itself out. And I would rather say that now, in August, than in the first week of October when their flights are booked.

Why this keeps happening on this particular river

This is the second serious flood down the Bhote Koshi in thirteen months, and I do not think anyone in Rasuwa believes it will be the last.

The mechanism is not complicated. Glaciers in Tibet and in the high Himalaya are melting faster than they used to. The meltwater collects in lakes, sometimes on the surface of the glacier itself, sometimes dammed behind loose moraine. Those dams are gravel and ice, not concrete. When one gives way, the whole lake comes down the valley in a few hours.

The lake that caused the July 2025 flood did not exist two years earlier. ICIMOD tracked it from a small pond at the end of December 2024 to something large enough to destroy a border crossing by July 2025. That is how quickly this can build, and it builds on the other side of an international frontier where we have no visibility at all.

This is the honest picture of high Himalayan travel now, and I do not think operators do their customers any favours by leaving it out of the brochure. It does not mean do not come. Millions of people trek in Nepal safely every year and the mountains are still the mountains. It means the sensible things are more sensible than they used to be: build spare days into your itinerary, carry insurance that actually covers helicopter evacuation, and go with somebody who will tell you the road is shut rather than hope you do not notice until you are on it.

Where we stand

I have a particular reason for taking this one seriously.

Our own Kailash group crossed at Rasuwagadhi on 16 August. We came back out through Timure on 25 August and flew to Kathmandu by helicopter from the Timure helipad. That helipad was swept away the following morning.

I am not telling you that for drama. I am telling you because it is the reason I am not going to sit on this and wait for the news to settle. Twenty-four hours is the entire margin between a group of pilgrims flying home and a group of pilgrims stuck on the wrong side of a broken road with no helipad to lift them out. Nobody planned that margin. Nobody could have.

What we are doing:

• Every client with an autumn booking through Rasuwa will hear from me directly, with the actual position rather than a holding message.
• We are not taking new overland Kailash bookings via Rasuwagadhi for 2026. I am not going to sell a crossing I do not believe will open, and then manage the disappointment later.
• We will keep this page updated as the road, the bridge and the crossing are assessed. When I know, you will know, including if the answer is worse than what is written here.

If you have a trip booked through this region, with us or with anybody else, you are welcome to message me on WhatsApp at +977 9810351300 and I will tell you what I actually know. I will not charge you for the conversation and I will not use it to sell you something. There are enough people in Rasuwa with real problems this week without the rest of us pretending we have answers we do not have.

My thoughts are with the families in Timure and Syabrubesi tonight. A good number of them are guides, lodge owners and porters, and several of them have now lost the same thing twice in thirteen months.

Written by Shreejan Simkhada, CEO of The Everest Holiday and third-generation Himalayan guide. TAAN Member #1586. Last updated 26 August 2026. This page describes a developing situation and will be corrected as better information becomes available.