Lai Nullah
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Lai Nullah
Lai Nullah (Urdu: نالہ لئی), commonly called Nullah Lai, is a rain water fed natural stream flowing through the city of Rawalpindi. Every monsoon season the stream floods after being fed by its catchment basin in the Margalla Hills bordering Islamabad, Pakistan. The Lai Nullah Basin has a catchment area of 234.8 km2, extending to the twin cities of Islamabad and Rawalpindi. A record level of 620 mm of rainfall fell in Islamabad, Pakistan one in just 10 hours brought in its wake huge urban storm flooding in the famous Lai Nullah flowing through the twin cities on 23 July 2001., Islamabad and Rawalpindi are situated along the Margallah hills. In this paper severe rainfall spell 4–9 July 2008 is analyzed. Our main focus is the flooding which occurred on 5 July due to 104mm rainfall received in only 100 minutes; 162 mm rainfall was recorded only in 5 hours at PMD Headquarters Islamabad. Densely populated low-lying areas along Lai Nullah faced flood like situ ...
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Lai Nullah
Lai Nullah (Urdu: نالہ لئی), commonly called Nullah Lai, is a rain water fed natural stream flowing through the city of Rawalpindi. Every monsoon season the stream floods after being fed by its catchment basin in the Margalla Hills bordering Islamabad, Pakistan. The Lai Nullah Basin has a catchment area of 234.8 km2, extending to the twin cities of Islamabad and Rawalpindi. A record level of 620 mm of rainfall fell in Islamabad, Pakistan one in just 10 hours brought in its wake huge urban storm flooding in the famous Lai Nullah flowing through the twin cities on 23 July 2001., Islamabad and Rawalpindi are situated along the Margallah hills. In this paper severe rainfall spell 4–9 July 2008 is analyzed. Our main focus is the flooding which occurred on 5 July due to 104mm rainfall received in only 100 minutes; 162 mm rainfall was recorded only in 5 hours at PMD Headquarters Islamabad. Densely populated low-lying areas along Lai Nullah faced flood like situ ...
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Rawalpindi
Rawalpindi ( or ; Urdu, ) is a city in the Punjab province of Pakistan. It is the fourth largest city in Pakistan after Karachi, Lahore and Faisalabad, and third largest in Punjab after Lahore and Faisalabad. Rawalpindi is next to Pakistan's capital Islamabad, and the two are jointly known as the "twin cities" because of the social and economic links between them. Rawalpindi is on the Pothohar Plateau, known for its ancient Hindu and Buddhist heritage, especially in the neighbouring town of Taxila, a UNESCO World Heritage Site. In 1765, the ruling Gakhars were defeated and the city came under Sikh rule, becoming an important city within the Sikh Empire based at Lahore. The city's ''Babu Mohallah'' neighbourhood was once home to a community of Jewish traders that had fled Mashhad, Persia, in the 1830s. The city was conquered by the British Raj in 1849, and in the late 19th century became the largest garrison town of the British Indian Army's Northern command as its climate ...
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Monsoon
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is also sometimes used to describe locally heavy but short-term rains. The major monsoon systems of the world consist of the West African, Asia–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area. Etymology The etymology of the word monsoon is not wholl ...
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Margalla Hills
The Margalla Hills () are a hill range within the Margalla Hills National Park on the northern edge of Islamabad Capital Territory, Pakistan, just south of Haripur District, Khyber Pakhtunkhwa. They are part of the Himalayas, Himalayan foothills. The Margalla range has an area of 12,605 hectares. It is a range with many valleys as well as high mountains. Infrastructure Khayaban-e-Iqbal, arises on the north east side from the 4th Avenue (Nur Pur Shahan), runs between E and F sectors, and ends at Service Road West of F-11 and E-11 (Golra Sharif, Golra) sectors in the south-east. It will be extended up to Grand Trunk Road, Grand Trunk (GT) Road in the near future. Paleontology and archeology According to the research carried out by scientists and archaeologists of the project "Post-Earthquake Explorations of Human Remains in Margalla Hills", the formation of the Margalla Hills dates to the Miocene epoch. The dominant limestone of the Margalla is mixed with sandstone and occas ...
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Islamabad
Islamabad (; ur, , ) is the capital city of Pakistan. It is the country's ninth-most populous city, with a population of over 1.2 million people, and is federally administered by the Pakistani government as part of the Islamabad Capital Territory. Built as a planned city in the 1960s, it replaced Rawalpindi as Pakistan's national capital. The city is notable for its high standards of living, safety, cleanliness, and abundant greenery. Greek architect Constantinos Apostolou Doxiadis developed Islamabad's master plan, in which he divided it into eight zones; administrative, diplomatic enclave, residential areas, educational and industrial sectors, commercial areas, as well as rural and green areas administered by the Islamabad Metropolitan Corporation with support from the Capital Development Authority. Islamabad is known for the presence of several parks and forests, including the Margalla Hills National Park and the Shakarparian. It is home to several landmarks, includin ...
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Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 243 million people, and has the world's Islam by country#Countries, second-largest Muslim population just behind Indonesia. Pakistan is the List of countries and dependencies by area, 33rd-largest country in the world by area and 2nd largest in South Asia, spanning . It has a coastline along the Arabian Sea and Gulf of Oman in the south, and is bordered by India to India–Pakistan border, the east, Afghanistan to Durand Line, the west, Iran to Iran–Pakistan border, the southwest, and China to China–Pakistan border, the northeast. It is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the north, and also shares a maritime border with Oman. Islamabad is the nation's capital, while Karachi is its largest city and fina ...
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2001 Islamabad Cloud Burst
On 23 July 2001, Islamabad experienced a record breaking of rainfall, which was the 24 hours heaviest rainfall in Pakistan during the past 100 years. Continuous downpour lasted for about 10 hours from 0600 to 1600 PST in Islamabad and Rawalpindi, caused the worst ever Flash flood in the local stream called Nulla Lai and its tributaries of Rawalpindi, which not only flood the low-lying areas of the twin cities but swept away the banks of the stream and buildings built in the encroachments. Islamabad's twin city, Rawalpindi experienced of rain during this event. Causes The cloud burst was the result of the sequel of vigorously developed cloud due to the combined effect of well marked westerly trough (Westerly wave), passing over 500hpa with enough supply of moisture from southwest monsoon. A surface low pressure formed over Hazara and Malakand division between 34-37ºN and 70-75ºE with central pressure less than 996 hpa. There was a gradually accentuating upper air we ...
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Lai Expressway
Lai Expressway is the 17 km long under construction alternative road to connect Islamabad's IJP Road with GT Road. The initial cost of the project is estimated at PKR.70 billion. It will be built with the participation of government and private institutions. Asian Development Bank will provide 10 billion rupees for the installation of sewage treatment plant associated with this project. See also * Islamabad Expressway * Expressways of Pakistan Expressways of Pakistan ( ur, ) are a network of multiple-lane, high-speed toll highways in Pakistan, which are owned, maintained and operated by various levels of government. All federal expressways are controlled by the National Highway Author ... References {{Roads in Pakistan Expressways in Pakistan Transport in Islamabad Capital Territory Transport in Rawalpindi Proposed roads in Pakistan ...
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