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 …

District groundwater brochure: Nagapattinam district, Tamil Nadu

The hydrogeological environment in the Nagapattinam district has been subjected to pollution considerably. The eastern part of the district being tail end of the canal system, and due to inferior quality of ground water, the agricultural prosperity in the eastern part attained a set back. The agricultural lands are brought …

Impact of retreat of Gangotri glacier on the flow of Ganga River

Recently, there have been news items and discussions suggesting that the Gangotri glacier is melting at a rapid rate and it is likely that it will disappear in the next 20

Course correction

Can Bihar avert another Kosi disaster? On September 16, the Special Task Force constituted by the prime minister put a figure on the destruction caused by floods in Bihar

Mahseer in danger

illegal sand extraction upstream of Cauvery has put the Deccan mahseer in danger.

High frequency new particle formation in the Himalayas

Rising air pollution levels in South Asia will have worldwide environmental consequences. Transport of pollutants from the densely populated regions of India, Pakistan, China, and Nepal to the Himalayas may lead to substantial radiative forcing in South Asia with potential effects on the monsoon circulation and, hence, on regional climate …

Hydropower in Uttarakhand: Is development the real objective?

A perusal of environment impact assessments for hydel projects in Uttarakhand brings out various deficiencies in the reports, and the unstudied manner in which such projects have been embarked upon. That many more of such projects have been proposed points to the muddled direction adopted for energy supply, reminding us …

Northern Hemisphere controls on tropical Southeast African climate during the past 60,000 years

The processes that control climate in the tropics are poorly understood. We applied compound-specific hydrogen isotopes (D) and the TEX86 (tetraether index of 86 carbon atoms) temperature proxy to sediment cores from Lake Tanganyika to independently reconstruct precipitation and temperature variations during the past 60,000 years. Tanganyika temperatures follow Northern …

Spatial variability of soil properties & its application in predicting surface map of hydraulic parameters

Knowledge of spatial variation of soil properties is important in precision farming and environmental modelling. Spatial distribution of water content at field capacity (FC) and permanent wilting point (PWP) at different zones of a farm governs the available water for plant growth. These two soil hydraulic parameters play key roles …

Surface energy balance of seasonal snow cover for snow-melt estimation in NW Himalaya

This study describes time series analysis of snow-melt, radiation data and energy balance for a seasonal snow cover at Dhundi field station of SASE, which lies in Pir Panjal range of the N

Comparing groundwater recharge and base flow in the Bukmoongol small-forested watershed, Korea

Groundwater recharge and base flow using different investigated methods are simulated in the 15-ha Bukmoongol small-forested watershed located at the southern part of Korea. The WHAT system, PART, RORA, PULSE, BFI, and RAP software are used to estimate groundwater recharge or base flow and base flow index from the measured …

Periphytonic diversity in Bhagirathi: Preimpoundment study of Tehri dam reservoir

Tehri hydroelectric project of 2,400 MW capacity, the Asia's highest dam constructed on the Bhagirathi river in Uttarakhand is one of the most debatable dams of the country. The fluvial system of Bhagirathi and Bhilagana has been converted into a huge lentic water reservoir. Therefore, the information on periphytonic diversity …

Post-Jonglei planning in southern Sudan: combining environment with development

In 2008, the Sudanese and Egyptian governments decided to resume work on the Jonglei Canal project, which had been abandoned for 24 years. This project in southern Sudan plans to by-pass, and thus drain, part of the wetlands of the Bahr al-Jabal and Bahr az-Zaraf rivers into the White Nile. …

Engineered flood

Not excess water, but neglected embankment caused the flood India has blamed the previous seven breaches on the Kosi embankment on Nepal releasing water from the barrage at Bhimnagar, even though Nepal has no control over the sluice gates. All the earlier breaches had occurred downstream of the barrage. But …

Kosi breaches

1963: At eastern embankment at Dalwa in Nepal 1968: At western embankment at Jamalpur 1971: Collapse of Bhatania Approach Bund in Supaul 1980: In the eastern embankment in Saharsa. 1984: In the eastern embankment at Navhatta in Saharsa 1987: In the western embankment at Samani and Ghonghepur in Saharsa 1991: …

That sinking feeling

A baffled Bihar is struggling to provide food and shelter to three million people rendered homeless by a flood that swept through five districts. The Down To Earth team travels across the areas inundated by the Kosi in Bihar and Nepal to grasp the impact and concludes that the flood …

Embankment indicted

Findings of the fact-finding team that studied floods in Bihar: Embanking the Kosi has prevented the Kosi

Risks yours, profits mine

A series of hydropower projects on the Bhagirathi and the Alaknanda may reduce the Ganga to a trickle. But project proponents will still be making money. Why project developers aren

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