India’s National Capital Region (NCR), covering the National Capital Territory of Delhi and parts of Haryana, Uttar Pradesh, and Rajasthan, is one of the world’s largest urban agglomerations. In 2011, it had a population of 46 million, which was projected to increase to 64 million by 2021.
The rapid economic growth of the People’s Republic of China (PRC) has depended in part on reservoirs, which have facilitated flood control, irrigation, hydropower generation, and water supply. These reservoirs are grouped by the country into three safety classes. Class III, comprising 37,032 reservoirs or 43% of the total as of end−2006, are the least safe.
Since embarking on a modernization process in 1961, Bhutan has faced increasing urban migration due to limited opportunities in the rural areas. If trends continue, close to half of the country’s population may reside in the urban centers by 2020, increasing the pressure on already strained urban infrastructure and services.
Solomon Islands is a large Melanesian country, composed of 6 big islands, dozens of smaller islands, and several hundreds of islets and atolls. As of 2010, about 80% of its 500,000 people lived in the rural areas, in widely dispersed villages of a few hundred people.
Sindh is the second most populous province in Pakistan. In 2006, it had a total 38 million people, nearly half of whom lived in the urban areas. Karachi and Hyderabad, the province’s two largest cities, accounted for about 70% of the urban population.