Irrigation

The paper argues that watershed management has to be fluid to take into consideration new realities like change in flow conditions, external realities like unintended impacts and the need to maintain minimum downstream flows for environmental and other purposes.

The following article is a literature survey of water management interventions taken up in Indian fields to improve the water productivity which would in turn reduce the groundwater decline.

Wastewater/Sanitation

• India: Land of many cell phones, but fewer toilets
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• Eco toilets at the Pollutetech 2010 exhibition in IISc draw attention
• 6 districts in Karnataka achieve near total hygiene standards
• Poor sanitation lets super bug thrive in India

This report by ICRISAT deals with a survey of thirty-two tanks and farm data from Andhra Pradesh and Maharashtra states to assess the economic performance of irrigation tanks in semi arid tropics of India. It uses district-wise data on climatic and institutional variables to analyze the factors affecting tank-irrigation density. Results indicate that the spatial distribution of irrigation tanks is determined primarily by physical factors—hard rock substratum, post-monsoon rains, low moisture-holding capacity of soils and by population density.

This report under the WHiRL research project by the Natural Resources Institute (NRI) identifies the potential unintended impacts of water harvesting so that, if at all possible they are avoided altogether, but if these do occur, they are recognised at an early stage and steps are taken to mitigate their affects. It highlights evidence that is emerging about water harvesting in semi-arid areas, on how water if used inappropriately, can lead to inequitable access to water resources and, in the extreme, to unreliable drinking water supplies.

The Kisan Swaraj Yatra has been initiated by the Alliance for Sustainable and Holistic Agriculture (ASHA). This is a loose alliance of scores of groups across the country, drawn from more than 20 states. The network consists of farmers’ organizations, consumer groups, women’s organizations, environmental organizations, organic farmers’ cooperatives, individual scientists, doctors, health activists and others.

This Civil Engineering Course under the National Programme on Technology Enhanced Learning (NPTEL) on the broad subject of Water Resources Engineering and Management is being carried out by Indian Institute of Technology’s and the Indian Institute of Science, Bangalore as a collaborative project supported by the Ministry of Human Resource Development (Government of India) to enhance the quality of engineering education in the country, by developing curriculum based video and web courses. In these web based lectures, the authors have developed the subject in detail and in stages in a student-friendly manner. The broad group of Water Resources Engineering is structured into modules on the topic by IIT Kharagpur as follows: