India

This status report on "Hydrology of Arid Regions in India" compiles the scattered information on the subject. It is divided into nearly fourteen categories, covering sections like geology, rainfall, desertification of arid lands, position of groundwater in arid & semi-arid regions and dune landforms. 

The report attempts to provide solutions to the twin problems of waterlogging and salinity in the irrigated command area through various drainage or traditional reclamation measures viz controlling the intensity of irrigation, providing drainage system, lining, improving natural drainage, preventing seepage or adopting modern technology for application of water.

The report, a part of the regular work programme of the Flood Studies Division of the National Institute of Hydrology presents a literature review on modeling debris flow. Occurrence of debris flows is a common natural phenomenon and denotes the rapid flow of debris with sufficient water to disperse grains uniformly throughout the entire depth. Dam break flows, landslides and flows in a mountainous terrain are some of the examples.

The performance audit report of the Accelerated Rural Water Supply Programme (ARWSP) for the period April 2002 to March 2007, conducted by the Comptroller and Auditor General (CAG), reveals numerous deficiencies in execution and implementation of works such as cases of time and cost-overrun, non-completion & delayed completion of works, non-functional & defunct works, delayed completion & non-completion of water quality mission projects, incorrect prioritization of works, wasteful and unfruitful expenditure, and expenditure on unapproved items.

The report presents guidelines for hydrological investigations in a small watershed. A watershed is an individual entity, and is a naturally occurring unit of the landscape, which contains a complex array of interlinked and interdependent resources and activities irrespective of political boundaries. In addition, it is logical unit having readily identifiable boundaries and characteristics of water movement, which helps in coordinated planning and management.

The report deals with expert systems for unit hydrograph analysis, an emerging technology, which may in years to come, revolutionize professional activities in the field of surface water analysis and modeling. The literature review on the topic revealed the potential of application of expert system for unit hydrograph analysis. A prototype expert system has been developed for the selection of the most appropriate model for unit hydrograph derivation of a given catchment.

The History of Water Filters website, has interesting and useful information on water filters, water treatment alternatives and water quality.

Earth Policy Institute, is a non-profit environmental research organization dedicated to providing a vision of an eco-economy and a roadmap on how to get there. The Institute was founded in 2001 with the following goals: 

• to provide a global plan (Plan B) for moving the world onto an environmentally and economically sustainable path
• to provide examples demonstrating how the plan would work, and
• to keep the media, policymakers, academics, environmentalists, and other decision-makers focused on the process of building a Plan B economy.

The basic research of the Institute has been published in the form of seven books:

The report presents development of a sensor system capable of automated measurement of soil-water status, using the four-electrode resistivity (VES) method, in a soil profile. In this method, by changing the separation between two electrodes (metallic rods) placed at the ground surface without digging any holes, the variation in moisture content in the sub-surface soil profile can be monitored.

The report deals with software developed by the National Institute of Hydrology with the purpose of preparation of hydrological data book in a form most valuable to the users. A menu driven, user friendly software has been developed to handle all types of hydrological and meteorological data.