THRISSUR: A study conducted by the Kerala Engineering Research Institute (KERI), Peechi, in 12 large and minor reservoirs in the state by using the modern Integrated Bathymetric System, has found huge accumulation of sediments, mainly consisting of sand, clay and silt, in these dams.

Study of beach morphological changes during monsoon and development of capabilities towards its prediction is of vital importance in coastal zone management. A study of the beach erosion/accretion processes during south-west monsoon and its numerical modelling is attempted in this communication for a micro-tidal and high-energy beach. Comprehensive

The Lam Phra Phloeng dam was constructed in 1963 and is located in the Nakhon Ratchasima province. The dam has severely reduced water level caused by deforestation and agriculture at the upper land. Sediment cores were collected using a gravity corer. The 210 Pb activities were measured using alpha and gamma spectrometry and sedimentation rates were determined.

Erosion is a natural geomorphic process occurring continually over the earth

To measure impact of ecological change in Chittagon Hill Tracts after the installation od dam Kaptai in 1955 on siltation, Bangladesh Water Development Board has conducted siltation study several times from 1978.

This paper on the state of Himalayan Glaciers by V K Raina, ex Deputy Director of GSI presents a historical review of the research to date spanning more than fifty years, and claims that it is premature to accept that Himalayan glaciers are retreating abnormally because of global warming.

Floods are an endemic problem in India. Every major flood event is immediately followed by a flood of a different kind

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 18 August 2008 avulsion of the Kosi River draining the parts of north Bihar in eastern India may well be regarded as one of the greatest avulsions in a large river in recent years. The Kosi River shifted by ~120 km eastward, triggered by the breach of the eastern afflux bund at Kusaha in Nepal at a location 12 km upstream of the Kosi barrage. This event was widely perceived as a major flood in the media and scientific circles. Although a large area was indeed inundated after this event, it is important to appreciate that this inundation was different from a regular flooding event.

Original Source

Dinesh Kumar Mishra looks back at the history of floods in North Bihar and wonders what this year has in store Had the Kosi river not breached its eastern embankment at Kusaha last year, 2008 would have gone down as a drought year in North Bihar. The rains were scanty and there was virtual drought after the breach occurred. That is why the Kosi hit only 3.3 million people across five