Smallholder irrigation may considerably contribute to agricultural productivity growth in Sub-Saharan Africa. However, the full potential of expanding smallholder irrigation under alternative irrigation technologies is not known. This paper presents a study to assess the irrigation expansion...

We investigated the spatiotemporal variability of drought incidence in Pakistan during 1960-2007 by calculating Standardized Precipitation Index fields for 3-, 6- and 12-month scales using gridded precipitation data. Principal component analysis revealed that droughts are wide-spread and often...

Water plays a major role in the climate system and in mediating impacts of climate variability and change on all sectors of the economy. The incorporation of water resources modeling into integrated assessment models (IAMs) to study climate–hydrology processes, related water impacts and...

This working paper draws from the joint World Bank and World Meteorological Organization / Global Water Partnership Integrated Drought Management Program (IDMP) work stream on benefits of action and costs of inaction (BACI) for drought preparedness and mitigation. It suggests a methodological...

A widely cited report from 1979 suggested that existing wood supplies in Haiti would be enough to meet increasing charcoal demand until around the year 2000, but that ongoing charcoal production could result in an environmental ‘apocalypse’ (Voltaire 1979, 21, 23) The prediction that wood...

Groundwater is playing an increasingly important role in domestic, industrial and agricultural water supply. With the advent of the tube well and driven by the rapid growth of demand for agricultural and municipal water, annual global groundwater extraction has increased in recent decades from 100 k

The report begins with definitions of watersheds and watershed management, a characterization of the problem of watershed degradation, and a short history of watershed management operations and policies (Chapter 1). The following four chapters discuss the findings from experience with...