Nepal measures about 880 kilometers (547 mi) along its Himalayan axis by 150 to 250 kilometers across. It has an area of 147,516 km2 (56,956 sq mi).
The Kosi or Koshi is a transboundary river which flows through China, Nepal and India. It drains the northern slopes of the Himalayas in Tibet and the southern slopes in Nepal. From a major confluence of tributaries north of the Chatra Gorge onwards, the Kosi River is also known as the Saptakoshi for its seven upper tributaries. These include the Tamur River originating from the Kanchenjunga area in the east and Arun River and the Sun Kosi from Tibet. The Sun Koshi's tributaries from east to west are the Dudh Koshi, Likhu Khola, Tamakoshi River, Bhote Koshi and Indravati. The Saptakoshi crosses into northern Bihar, India where it branches into distributaries before joining the Ganges near Kursela in Katihar district. The Kosi is the third-largest tributary of the Ganges by water discharge after the Ghaghara and the Yamuna.
The 2007 South Asian floods were a series of floods in India, Pakistan, Bhutan, Nepal and Bangladesh. News Agencies, citing the Indian and Bangladeshi governments, place the death toll in excess of 2,000. By 3 August, approximately 20 million had been affected and by 10 August some 30 million people in India, Bangladesh and Nepal had been affected by flooding.
Pakistan's climate varies from a continental type of climate in the north (Gilgit-Baltistan,Kashmir,KPK), a mountainous dry climate in the west (Baluchistan), a wet climate in the East (Punjab) an arid climate in the Thar Desert, to a tropical climate in the southeast (Sindh), characterized by extreme variations in temperature, both seasonally and daily, because it is located on a great landmass barely north of the Tropic of Cancer.
The global weather activity of 2010 includes major meteorological events in the Earth's atmosphere during the year, including winter storms, hailstorms, out of season monsoon rain storms, extratropical cyclones, gales, microbursts, flooding, rainstorms, tropical cyclones, and other severe weather events.
The 2010 China floods began in early May 2010. Three hundred and ninety-two people died, and a further 232 people were reported missing as of June 30, 2010, including 57 people in a landslide in Guizhou. Fifty-three of the deaths occurred from the flooding and landslides between May 31 and June 3, and 266 deaths occurred between June 13 and June 29. Four hundred and twenty four people were killed by the end of June, including 42 from the Guizhou landslide; 277 more were killed and 147 were missing in the first two weeks of July, bringing the death toll as of August 5 to 1,072. A landslide in early August in Gansu killed at least 1,471 people and left 294 missing. In total, the flooding and landslides killed at least 3,185 people in China by August 31. More than 230 million people in 28 provinces, municipalities, and regions, especially the southern and central provinces and regions of Zhejiang, Fujian, Jiangxi, Hubei, Hunan, Guangdong, Guangxi, Chongqing Municipality, Gansu, Sichuan, and Guizhou, and the northeastern province of Jilin were affected, while at least 4.66 million people were evacuated because of the risk of flooding and landslides in the latter half of June. By early August, over 12 million people were evacuated, and that number rose to 15.2 million by August 31.
In June 2013, a mid-day cloudburst centered on the North Indian state of Uttarakhand caused devastating floods and landslides, becoming the country's worst natural disaster since the 2004 tsunami. The rainfall received that month was far greater than the rainfall the state usually received. Debris blocked the rivers, causing major overflow. The main day of the flood was 16 June 2013.
In August 2013, Pakistan and eastern Afghanistan experienced heavy rain that led to flash flooding. More than 180 died as a result of the floods.
In mid-June 2016, severe weather such as heavy rainfall, thunderstorms and hail began across southern China, triggering deadly floods. Over the following month, additional rain events exacerbated flooding and affected more of the country. Areas along the Yangtze River and Huai River have been particularly hard-hit. An estimated 32 million people across 26 provinces were affected and more than 200 people were killed. 280,000 hectares of cropland was destroyed, with state damage estimates of around US$5.73 billion. According to Aon Benfield, the damage estimate has reached US$22 billion. Flooding of this magnitude was last seen in the country in 1998. The floods destroyed over 23,600 houses and left 3,600 refugees homeless.
Widespread monsoon flooding occurred in the South Asian countries of Afghanistan, Bangladesh, India, Nepal and Pakistan from July through September 2017. More than 45 million people were affected by the floods, including 16 million children.
The Brahmaputra floods refers to a catastrophic flood event that occurred in 2012 along the Brahmaputra River and its tributaries, as well as in subsequent years.
In mid-March 2019, monsoonal downpours caused widespread flooding and landslides across South Asia.
The 2019 Indian floods were a series of floods that affected over thirteen states in late July and early August 2019, due to excessive rains. At least 200 people died and about a million people were displaced. Karnataka and Maharashtra were the most severely affected states. People died but many were rescued with the help of the Indian Navy.
2020 Assam floods refers to the significant flood event of the Brahmaputra River in the Indian north-eastern state of Assam and coincided with the COVID-19 pandemic. Initial flooding started in May 2020 due to heavy rainfall affecting 30,000 and destroying crops across 5 districts. As of October 2020 the floods affected over five million people, claiming the lives of 123 people, with an additional 26 deaths due to landslides, 5474 villages were affected and over one hundred and fifty thousand people found refuge in relief camps.
In 2021, Niger has been affected by subsequent floods due to heavy rains, causing several deaths and widespread damage nationwide. Niamey is the most affected area. At least 62 people died, 60 were injured and 105,690 individuals have been affected by the floods. Most fatalities were reported in Maradi Region with 18 deaths.
From January to October 2022, excessive rainfall and widespread monsoon flooding occurred in the South Asian countries of Afghanistan, Bangladesh, India, Nepal, Pakistan, and Sri Lanka. It has become the region's deadliest floods since 2020, with over 4,700 people dead.
The 2024 Nepal floods were the by-product of torrential rainfall during the annual monsoon season in early July, mid August, and late September, which caused significant flooding across the nation as well as several mudslides. The September floods, which caused the most damage and deaths, were caused by the heaviest rainfall recorded in the region since at least 1970, itself the result of a low-pressure system. The impact of the floods was further increased by poor infrastructure and settlement planning, including unplanned construction on floodplains.
