Hydrology

Order of the National Green Tribunal regarding floating hotel in Tehri Lake, 10/02/2025

Order of the National Green Tribunal in the matter of News item titled "Uttarakhand HC License expired why is floating hotel running?" appearing in the Times of India dated 07.01.2024. The MA was registered on the basis of the report dated June 14, 2024 filed by the National Mission for …

River systems in the Gangetic plains and their comparison with the Siwaliks: A review

The Indo-Gangetic plains are drained by several fan and interfan rivers fringing the margin of the outer Himalaya. These fan and interfan river systems are distinctly different from each other in terms of hydrology and sediment transport and generate typical alluvial architecture below the plains. The Siwalik sequences stretching all …

A watershed plan

Recurrent droughts and floods coupled with mass poverty, chronic unemployment and pervasive malnutrition are the major challenges before India. The Union government usually responds by complaining about truant rains and doles out funds in an arbitrary manner. As an alternative, I propose a nationwide watershed development programme through the statutory …

Churning issue

the Supreme Court (sc) has asked the Union government to consider linking the country's rivers within 10 years, advancing the government's own deadline. Earlier, the Union ministry of water resources had filed an affidavit stating that this project, which it claimed would control flood and drought conditions, would be completed …

Scrutinising disasters

Flood Studies in India brings to fore several aspects of this natural disaster that are not yet conventional wisdom in policy circles. The book looks at floods from a variety of expertise areas, such as civil engineering, meteorology, hydrology, remote sensing, geomorphology and geography - the only way to do …

Increasing risk of great floods in a changing climate

Radiative effects of anthropogenic changes in atmospheric composition are expected to cause climate changes, in particular an intensification of the global water cycle with a consequent increase in flood risk. But the detection of anthropogenically forced changes in flooding is difficult because of the substantial natural variability, the dependence of …

Watered down

aerosols may be the culprits weakening the Earth's water cycle by reducing rainfall. This was discovered during a study conducted by researchers at the Scripps Institution of Oceanography, University of California, San Diego, usa. According to the researchers, the tiny aerosols that are primarily made up of black carbon could …

Aerosols, climate, and the hydrological cycle

Human activities are releasing tiny particles (aerosols) into the atmosphere. These human-made aerosols enhance scattering and absorption of solar radiation. They also produce brighter clouds that are less efficient at releasing precipitation. These in turn lead to large reductions in the amount of solar irradiance reaching Earth's surface, a corresponding …

Indian Ocean Experiment: An integrated analysis of the climate forcing and effects of the great Indo‐Asian haze

Every year, from December to April, anthropogenic haze spreads over most of the North Indian Ocean, and South and Southeast Asia. The Indian Ocean Experiment (INDOEX) documented this Indo-Asian haze at scales ranging from individual particles to its contribution to the regional climate forcing. This study integrates the multiplatform observations …

Storehouse of water

although the importance of Himalaya-Karakoram as the largest storehouse of fresh water in the lower latitudes, and the important role of their snow and ice in maintaining the flows of the Indus, the Ganga and the Brahmaputra during the lean period was well perceived and understood since ancient times, scientific …

Now it is floods

The library of the Centre for Science and Environment ( cse ) has just put together a collection of clippings from April 1999 onwards on floods in major cities of India. First it was drought and now it is floods, not just rural floods but also urban floods. Urban environmental …

Reduction of tropical cloudiness by soot

Measurements and models show that enhanced aerosol concentrations can augment cloud albedo not only by increasing total droplet cross-sectional area, but also by reducing precipitation and thereby increasing cloud water content and cloud coverage. Aerosol pollution is expected to exert a net cooling influence on the global climate through these …

Hydrology project

india is facing an acute water shortage, and various attempts are being made to overcome the problem. One such effort was made by the government of India when it set up a Hydrology Project in 1996. To support the project the World Bank made available a loan of us $162 …

Water balance of Lake Nainital, Kumaun Himalayas

Existence of Lake Nainital has been a matter of debate in the last two decades, because it is the only source of drinking water to Nainital city, a famous tourist resort in northern India. In the tectonically active lake basin, naturally occurring landslides have genered sediments in huge amount. In …

Climate change and water resources in Britain

This paper explores the potential implications of climate change for the use and management of water resources in Britain. It is based on a review of simulations of changes in river flows, groundwater recharge and river water quality. These simulations imply, under feasible climate change scenarios, that annual, winter and …

Political conflict in Bangladesh

Ever since the inception of Bangladesh in 1972 its politics have been featured by several types of seemingly endemic conflict, some of which have been associated with either periodic outbursts of violence or prolonged relatively low-key armed confrontations. The objective of the present study is that of placing the different …

Hydrological changes in the Ganges system in Bangladesh in the post- Farakka period

The basin area of the Ganges river in Bangladesh is extremely dependent on a regular water supply from upstream to meet requirements for agriculture, fisheries, navigation, salinity control, domestic and industrial sectors. In 1975 India commissioned a barrage on the Ganga river at Farakka to divert significant portion of the …

Recent changes in the climate at the Dead Sea - A preliminary study

In the last decade pan evaporation measured at the Southern Dead Sea has significantly increased. Wind, temperature and humidity measurements at the Dead Sea starting in the 1930s as well as 3-D model simulations all seem to indicate a statistically significant change in the local climate of the Dead Sea …

Groundwater depletion in Punjab

While the cultivation of paddy in Punjab (and Haryana) does need some curbing, the extreme forebodings of either total groundwater exhaustion in Punjab or of the state turning into a desert of paddy growing is not curbed forthwith are unwarranted.

Carbon sinks in mangroves and their implications to carbon budget of tropical coastal ecosystems

Nearly 50% of terrigenous materials delivered to the world's oceans are delivered through just twenty-one major river systems. These river-dominated coastal margins (including estuarine and shelf ecosystems) are thus important both to the regional enhancement of productivity and to the global flux of C that is observed in land-margin ecosystems. …

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