In this paper an attempt has been made to analyze the sedimentation surveys and rates in live storage capacity of reservoirs. The analysis is based on the available data of 28 reservoirs from different basins of Maharashtra.

Kachchh, the second largest district in the country (45,652 sq. km), is located in the north-western region of Gujarat. In spite of being arid, Kachchh district has 80.21% of the total wetlands area in Gujarat2 (21.77 lakh ha).

Many of the world's largest deltas are densely populated and heavily farmed. Yet many of their inhabitants are becoming increasingly vulnerable to flooding and conversions of their land to open ocean.

The Ganga continues to be threatened by environmentally unsustainable development projects, of which the Ganga Expressway is the most recent example. But the campaign to save the Ganga is seemingly caught in recrimination and bad governance.

Three lakes (Nainital, Sattal and Naukuchiatal) in the Kumaun Himalayan region were investigated for total organic carbon and nitrogen, their atomic ratios and isotopic composition in their sediments. These geochemical proxies measured in 34-45 cm long cores indicate that organic matter preserved in the lake sediments is primarily derived from algal matter.

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The low 13C/12C ratio in some Neoproterozoic carbonates is considered to be evidence of carbon cycle perturbations unique to the Precambrian. Here, all published oxygen and carbon isotope data for Neoproterozoic marine carbonates are compiled.

Ice cores extracted from the Antarctic ice sheet suggest that glacial conditions and the relationship between temperatures and atmospheric carbon dioxide concentrations have been constant over the last 800,000 years, but there is some evidence for a fluctuating severity of glacial periods mediated by previously unidentified mechanisms.

The presence of ice-rafted debris (IRD) in middle Eocene ocean sediments has previously been demonstrated, but it has been unclear whether the source of IRD was land-based glacial ice or sea ice, a distinction with important climate implications.

At times in the past, mobile ocean fronts in the subtropics have exercised an influence on the magnitude of climate change by decoupling temperature from levels of carbon dioxide in the atmosphere.

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