Rivers

This paper elaborates the techno – legal aspects of Interstate river water disputes act – 1956 which was enacted to resolve the water disputes among the basin states of an interstate river / river valley. This Act’s main purpose is to protect the interests of a downstream state when water resources available in an upstream state are put to additional use.

Interstate River Water Disputes Act – 1956 (IRWD Act) was first enacted on 28th August, 1956 by Indian parliament on the eve of reorganization of states on linguistic basis to resolve the water disputes that would arise in the use, control and distribution of an interstate river or river valley. This Act further has undergone amendments subsequently and its recent amendment took place in 2002. It also validates the previous agreements (if any) among the basin states to harness water of an interstate river/ river valley.

It evolves a methodology for identifying hot spots in Indian rivers. The water quality data is based on the average values observed during the last ten years (2001-2011) at 371 monitoring stations of CWC on almost all major, medium and minor rivers in India. In respect of Dissolved Oxygen and Biochemical Oxygen Demand, the Central Pollution Control Board's classification has been considered for evaluating the hot spot in the rivers.

The physical and chemical quality of river water is important in deciding its suitability for drinking purposes. As such the suitability of river water for potable uses with regard to its chemical quality has to be deciphered and defined on the basis of the some vital characteristics of the water. Bureau of Indian Standards (BIS) vide its document IS: 10500:1991, edition 2.2 (2003‐09) has recommended the quality standards for drinking water and these have been used for finding the suitability of river water. On this basis of classification, the natural river water of India has been categorized as desirable, permissible and unfit for human consumption.

This report by the Assam Science Technology & Environment Council (ASTEC) contains the compiled recommendation of three consultative workshops organized in Assam University, Gauhati University and

The Madurai Symposium organised by the

This report by the Kerala State Council for Science, Technology and Environment (KSCSTE) and Centre for Water Resources Development and Management (CWRDM) on water quality monitoring in Kerala covers all its forty four river basins. This is being done under the “Environmental Monitoring Programme on Water Quality” under which samples are being collected both from surface and groundwater sources.

Groundwater sampling stations were fixed after conducting a sanitary survey in the panchayats. Water Quality Information System is being developed using Geographical Information Systems (GIS) to manage the water quality from point or non-point source of pollution.

In the first phase of the project, three river basins of Kerala viz. Kabbini, Periyar and Neyyar were monitored. The network was later expanded to basins such as Chaliyar, Kadalundi, Meenachil, Karamana, Anjarakandi, Pamba, Muvattupuzha, Bharatapuzha, and Chalakudy. 

This paper published in the journal Current Science presents the findings of a study has been taken up to quantify the possible impacts of the climate change on the water resources of Indian river systems within the constraints of the uncertainty of climate change predictions. The study uses the PRECIS daily weather data to determine the spatio-temporal water availability in the river systems.

A distributed hydrological model, namely SWAT has been used to simulate all the river basins of the country. The analysis has been performed to evaluate the severity of droughts and floods and thus identify the vulnerable hotspots that may require attention in view of the climate change in various parts of the country.

Impacts of climate change and climate variability on the water resources are likely to affect irrigated agriculture, installed power capacity, environmental flows in the dry season and higher flows during the wet season, thereby causing severe droughts and floods in urban and rural areas. Climate change impacts on water resources which are addressed and analysed in the present study include impacts on annual and inter-annual water availability as well as extreme events of droughts and floods.

This study by Institute for Social and Economic Change (ISEC) aims at understanding the livelihood patterns of fishermen within the Tungabhadra sub basin, a tributary of river Krishna located in peninsular India. Lack of integrated approach in development initiatives and water management plans warrants the need for Integrated Water Resource Management to support livelihoods. The study focuses on fisheries as a source of livelihood, current status and institutional support available, people dependant on it, development initiatives and suggestions for improvements.

Author: Jayanta Bandyopadhyay

This article published in the Seminar 626, October 2011 argues that our current state of knowledge of water systems and ecological modelling related to flows of water, which includes projecting a single quantitative figure of water requirements, is inadequate. Such a unilateral prescription of environmental flows or water requirements of aquatic systems as a method for the resolution of water conflicts may actually become the source of many new conflicts.

This report comprising a set of case studies by International Bank for Reconstruction and Development (IBRD) presents how environmental flows is dealt with in water resources policies, plans, and projects. It focuses on the integration of environmental water allocation into integrated water resources management (IWRM) and so fills a major gap in knowledge on IWRM.