Devastating floods near the border with China this week have killed at least 675 people in Nepal, the Himalayan nation's disaster authority said on Saturday.

Chinese state media earlier confirmed seven dead in Tibet following Wednesday's disaster, taking the total killed to 682.

The number of missing in Nepal remained constant at 2,426, after a sharp hike in numbers on Saturday morning.

That missing list includes 517 foreigners, as well as 933 workers on hydropower projects on the river where the torrent smashed down, according to the National Disaster Risk Reduction and Management Authority.

The number of missing also includes 45 Nepali Army soldiers, 40 police officers, and 19 immigration and customs officers.

In India, authorities said they had recovered seven bodies from rivers flowing from Nepal, believed to be flood victims.

However, they are not included in the toll.

More than 30 British nationals are among hundreds of people missing and feared dead as rescue efforts continue after flooding in the Rasuwa district, which borders China’s autonomous region of Tibet.

The team, consisting of specially trained crisis response staff, will work alongside the British embassy and local authorities.

They will help co-ordinate assistance for British nationals arriving at and departing from the airport, support those seeking information about missing relatives, liaise with local authorities and emergency responders, and reinforce existing consular operations on the ground.

Forming part of the UK’s wider response to the flooding, which includes £5 million of humanitarian support for relief and recovery efforts, the team will also work with families in the UK concerned about loved ones in the affected area.

Mr Basnet said rescue efforts were continuing at a hydropower construction plant, where more than 100 people are believed to be trapped in a mud-filled tunnel.

Rescue efforts had been hampered by fears of more flooding from a lake formed by the glacier collapse which sparked the flooding on Wednesday.

The Chinese Ministry of Water Resources said water levels had dropped by 10 metres from Thursday morning to Friday, according to state broadcaster CCTV.

Foreign Secretary Ed Miliband said: 'The scenes from Nepal are devastating, and our thoughts remain with everyone affected.

'The safety and welfare of British nationals is our top priority. That is why we are deploying a Rapid Deployment Team to Nepal to provide additional support on the ground for British nationals and their families at what is an incredibly difficult time.

'Our staff are working closely with the Nepali authorities, emergency responders and our embassy in Kathmandu to ensure those affected can access the assistance and information they need.

'We will continue to do everything we can to support British nationals impacted by this tragedy.'

The UK’s £5 million support package will support Nepal’s response efforts, including a combination of UN, Red Cross and NGO interventions.

The bodies/remains collected from health institutions and riverbanks are in a state of decomposition and are no longer identifiable."

A barrier lake which formed following flash flooding is draining naturally, Chinese state media reports.

Chinese Central TV (CCTV) said the barrier lake has largely cleared according to the Ministry of Water Resources' hydrological monitoring team.

They previously reported there was a risk of further mudslides or landslides after debris had formed in the lake after the devastating floods.

Liz Stephens, a professor in Climate Risk and Resilience at the University of Reading, also said the water levels seemed to have started to lower.

She said this indicated some of the water had been draining naturally rather than being ushered along by humans.

She told the BBC: 'That’s very promising, it reduces the imminent threat and may reduce the need to intervene with an engineering solution, to drain the lake artificially.'

However, she did warn that debris that was previously formed in the dam continues to be unstable.

She said it remained essential to keep observing for more landslides.

Dramatic CCTV footage shows a torrent of water tearing through Gyirong Port, yet there is little information on the victims.

The shocking footage shows hundreds of people fleeing for their lives as a wall of water and mud sweeps away everything in its path at Gyirong Port.

The video went viral online. However, only a single frame shot has been broadcast in China.

It is not only difficult to find this video on China's heavily censored internet, it is also just as much of a challenge to find any posts describing the 'tsunami from the sky' that has claimed hundreds of lives so far in Nepal.

Families of the missing face an agonising wait for news of their loved ones.

Communication with the worst-affected areas has proved difficult to come by due to broken connectivity.

Some areas are releasing lists of names of those who have been recovered, so families can locate their loved ones.

Almost 2,500 people are currently missing as many affected areas remain entrenched by mud as buildings were swept away.

Search and rescue efforts are slow-going as well, given the conditions.

An aid worker said the devastation is 'growing worse by the hour' following the deadly flash floods earlier this week.

Lok Chaudhary, a local partner with the Tearfund charity, said the devastation near Nuwakot, Nepal, was 'absolutely devastating'.