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An assessment of crop water productivity in the Indus and Ganges river basins: Current status and scope for improvement – A research report by IWMI

IWMI ReportThis paper by the International Water Management Institute (IWMI) presents a new approach for analysis of water productivity (WP) of rice and wheat in the Indus and the Ganges river basins, South Asia, based on the integration of readily available remote sensing, national crop productivity and land use statistics and weather data. Understanding crop water productivity over large river basins has significant implications for sustainable basin development planning.  

Three major steps are involved in producing crop water productivity maps: (1) crop dominance map, (2) yield estimates, and (3) water consumption (evapotranspiration (ET)) estimates. The crop dominance map is synthesized from the relevant, and publically available, land use/land cover (LULC) maps with ground truth data. National statistics on crop area and yields are collected, and the yields are interpolated to grid level (500 meters (m) x 500 m) using Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) maps.

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Paddy and water management with the System of Rice Intensification (SRI) – A special issue of the journal "Paddy and Water Environment"

PAWEThe international journal “Paddy and Water Environment” has brought out a special issue in March 2011 (Volume 9, Number 1) on “Paddy and Water Management with the System of Rice Intensification (SRI)” which brings together the results of formal research on SRI in a number of countries (Part I) and also reports on initiatives by government agencies, NGOs, universities, or the private sector, bringing knowledge of SRI to farmers in a wide range of agroecological circumstances (Part II). It has six articles and nine technical reports from Afghanistan, China, the Gambia, Kenya, India, Indonesia, Iraq, Mali,  Pakistan, Panama, and Thailand as well as several review articles.

The System of Rice Intensification (SRI), developed in Madagascar almost 30 years ago, modifies certain practices for managing plants, soil, water, and nutrients with the effect of raising the productivity of the land, labor, and capital devoted to rice production. Certain production inputs are reduced—seeds, inorganic fertilizer, water, and fuel where water is pumped—with increased yield as a result.

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Formation of glacial lakes in the Hindu Kush-Himalayas and Glacial Lake Outburst Flood risk assessment - A report by ICIMOD

This report by ICIMOD contains an assessment of the threat facing the Hindu Kush-Himalayan region from the recent (post-1950s) and rapid formation of meltwater lakes on the surface or at the end of a large number of the region’s glaciers owing to current climate warming. Individual case studies of the catastrophic outburst (glacial lake outburst floods or GLOFs) from such glacial lakes are introduced.Read More

Remote sensing and census based assessment and scope for improvement of rice and wheat water productivity in the Indo-Gangetic basin - A working paper by Challenge Program on Water and Food

This paper by the Challenge Programme for Water and Food (CPWF) presents a simplified approach to combine remote sensing, census and weather data to analyze basin rice and wheat water productivity (WP) in Indo-Gangetic river basin, South Asia. It presents an innovative approach to combine meteorological data, ground survey, national census with remotely sensed imagery to assess water use, yield, and finally crop water productivity for the Indo-Gangetic rice-wheat cropping system in South Asia. Read More

Impact of climate change on water resources and glacier melt and potential adaptations for Indian agriculture - A working paper by Challenge Program on Water and Food

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

Location

Farakka, WB, India
Latitude: 24.797155, Longitude: 87.914495

Indo-Gangetic river basins: Summary situation analysis by Challenge Program on Water and Food

The paper by the Challenge Programme on Water and Food (CPWF) - Basin Focal Project provides a brief situation analysis related to water, agriculture & poverty, water resources, water productivity, institutional aspects and opportunities & risks related to the development of the Indo-Gangetic basin (IGB). Management of IGB water resources presents some formidable challenges and, therefore, steps must be taken towards integrated management of the IGB’s water and land resources in order to ensure the future sustainability of all production and ecosystems in the basin. Read More

Location

Allahabad, UP, India
Latitude: 25.442540, Longitude: 81.829866

Mountains of concrete: Dam building in the Himalayas - A report by International Rivers Network

Mountains of concrete - IRN reportThis document by International Rivers Network provides a background for the recent plans initiated by India, Nepal, Pakistan and Bhutan to build several hundred dams on the Himalayan mountains, which store vast amounts of water and with their high slopes and fast moving rivers, present a huge potential for generating hydropower.

India, Nepal, Pakistan and Bhutan have been facing the increasing challenges of meeting their rising elecricity and energy needs and hydropower dams in the Himalayas are being proposed as solutions to meet a considerable part of these requirements.Read More

The document examines the various arguments that have been put forward against the building of the dams as against the proposed advantages that the dams are claimed to have for these four countries, which share common geographical, topographical and eco-climatic features but have starkly different political and economic contexts.

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Mountains of Concrete - Dam building in the Himalayas - International Rivers Network (2008)2.82 MB

Water Storage: A strategy for climate change adaptation in the Himalayas - A report by ICIMOD

ICIMOD Water StorageThis report by the International Centre for Integrated Mountain Development (ICIMOD) highlights the phenomenon of climate change and argues that water storage will be a key strategy for climate change adaptation in the coming years.

The report discusses the importance of the Hindu Kush Himalayan ranges as an important source of water to a large section of the population and warns of the impending crisis of water scarcity and food insecurity in the regions of Asia, if water harvesting and conservation efforts are not undertaken. The document argues that water storage thus becomes a central issue, which is very complicated to implement, particularly in the Hindu Kush Himalayan region.Read More

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Arghyam

6.22-2011.07.01-06