Flood

This report by Institute of Financial Management and Research (Madras) and Indian Institute of Technology (Madras) deals with the impact of sea level rise on major infrastructure, ecosystems and land along the Tamil Nadu coast.

The Tamil Nadu coastline is about 1,076 km, with thirteen coastal districts, and it forms a fairly large contiguous and narrow coastal strip dotted with fragile ecological features and rampant development activities. There are major, existing and proposed, economic and infrastructure developments, including ports, power plants, highways and even airports, which are being planned very close to the shoreline along India’s coast.

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This commentary by K S Valdiya in Current Science deals with the increased incidence of spells of intense-extreme rainfall, the resultant obstructions in floodways, the loss of carrying-holding capacity of rivers and the channelization of floodwater.

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The paper by the Challenge Program on Water and Food deals with the impact of climate change on water resources & glacier melt and potential adaptations in Indian agriculture. Global climatic changes will have major effects on precipitation, water availability, glacier/ice melt, and sea level rise. Climate-induced changes in hydrological conditions will affect the magnitude, frequency, and damage costs of future extreme events.Read More

The study evaluates the applicability of Artificial Neural Networks (ANN) in rainfall-runoff process modeling for the Ajay river basin, Jharkhand to predict the 6-hour ahead runoff at Sarath. Initially three flood events were considered for training, to find out the weights between different layers of the network. The back propagation algorithm has been used for optimization of weights. The developed ANN was validated for rest of the flood events.Read More