Indian Rivers and Waterways

During the last 25 years, the development of tube well irrigation has been most spectacular in Saryupar plain.

Narmada forms an estuary near the Gulf of Khambhat because it flows through a narrow rift valley with minimal sediment deposition, allowing tidal waters to mix with river water near its mouth. Major peninsular rivers like Cauvery, Krishna, and Ganga form deltas due to heavy sediment load and gentle gradients in their lower courses.

US Airways Flight 1549 crash-landed in the Hudson River in New York on January 15, 2009, in what became known as the 'Miracle on the Hudson'. The answer has a typo - it should be 'Hudson' not 'Hudsan'.

Gandhi Sagar Dam is one of the four dams built on the Chambal River as part of the Chambal Valley Development Project. It is located in Mandsaur district of Madhya Pradesh.

The Vindhya Range traditionally serves as the geographical and cultural boundary between North and South India, running roughly east-west across central India.

Both of the above given statements are correct.

The Hwang Ho (Yellow River) in China is called the yellow river due to the huge amount of yellowish loess sediment it carries. This gives the river its distinctive yellowish-brown color.

The Hanumannagar barrage is associated with the Kosi Project, a major irrigation and flood control initiative in Bihar. The main canal of the Kosi Project is taken from the Hanumannagar barrage. The other options refer to different dam projects: Bhakra Nangal (on Sutlej River), Indira Gandhi Project (on Beas River), and Hirakud Dam (on Mahanadi River).

The Nagarjunasagar Project on the Krishna River is one of India's largest irrigation projects. It has an irrigation potential of about 8-9 lakh hectares, making it the project that irrigates approximately 8,67,000 hectares as mentioned.

The Hirakud Dam on the Mahanadi River in Odisha is the longest dam in India and was built primarily to control floods in the Mahanadi delta region. It also serves irrigation and power generation purposes.

The Narmada river flows westward and empties directly into the Gulf of Khambhat (Arabian Sea) through an estuary, so it does not form a traditional delta like east-flowing rivers such as Brahmaputra, Krishna, and Ganges.

The Ganga River, which originates in the Himalayas and flows through India, is called the Padma River when it enters Bangladesh. The Padma then joins the Meghna and Jamuna rivers before flowing into the Bay of Bengal as the Meghna estuary. This is a standard geographical naming convention for transboundary rivers.

The Mahanadi River originates in Chhattisgarh and flows through Odisha (formerly Orissa), forming a large delta before joining the Bay of Bengal. The Godavari, Narmada, and Tapti have their deltas in other states.

Northern Plains have extensive alluvial aquifers due to Himalayan river deposits, while Coastal Plains have shallow groundwater tables from proximity to seas. These regions contain India's most productive aquifer systems, unlike the harder rock terrain of Peninsular India.