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Tag: River water

Contribution of snow and glacier melt to river flow: Selected upper river basins of the HICAP study, average 1998–2007
Precipitation falls as either snow or rain, depending on the temperature, which is closely linked to elevation. Snow can be stored as long-term (perennial) snow or become ice and contribute to the growth of glaciers. Sno...
09 Dec 2015 - by Kaya Asdal
Future contribution of snow and glacier melt to river flow: Projected total flow and average discharge by 2041–2050, RCP 8.5 dry-warm case
Depending on the stream flow composition (glacial melt, snow melt, rainfall, baseflow), different rivers within each of the basins will respond differently to climate change. Currently, the peak discharges within the upp...
09 Dec 2015 - by Kaya Asdal
Future contribution of snow and glacier melt to river flow: Projected total flow and average discharge by 2041–2050, RCP 4.5 cold-wet case
Depending on the stream flow composition (glacial melt, snow melt, rainfall, baseflow), different rivers within each of the basins will respond differently to climate change. Currently, the peak discharges within the upp...
09 Dec 2015 - by Kaya Asdal
Changes in discharge for selected rivers in the HKH region
Shifts in the seasonality of flows can have major implications for regional food security, especially when the timing of peak flows and growing seasons do not coincide. However, this study suggests that significant seaso...
09 Dec 2015 - by Kaya Asdal
Water use: The case of the Brahmaputra river basin
The population of South Asia has tripled over the last 60 years and now accounts for around a quarter of the world’s population, with China alone accounting for around one-fifth.29 An estimated 210 million people living ...
09 Dec 2015 - by Kaya Asdal
Hydrological charateristics of the HKH region: Selected upper river basins of the HICAP study
The rivers flowing from the Hindu Kush Himalayas provide the region with one of the most valuable resources: fresh water. Ten large Asian river systems originate in the HKH – the Amu Darya, Brahmaputra (Yarlungtsanpo), G...
09 Dec 2015 - by Kaya Asdal
Zambezi River runoff
A major impact of the construction of the Kariba and Cahora Bassa dams from 1950–1970 was the reduction in the Zambezi River runoff. Before the dam construction, the Zambezi River was torrential with high flows during t...
14 Oct 2013 - by GRID-Arendal
Phosphate levels in major basins
A comparison of the major watersheds between the two decades showed that Northern Europe and North America had lower phosphate concentrations, while the Ganges and Brahmaputra watersheds in South Central Asia had higher ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Nitrate in major rivers
Considering the data for all the rivers at the continental level, there has been little change in nitrate (NO3-N) concentrations between the two decades under comparison. Changes in the median value were not statisticall...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Industrial hot spots Tisza river basin
On 30 January 2000 a tailings dam at the Aurul Mine in Romania overflowed and released 100,000 cubic metres of effluent containing cyanide into the Tisza River. By the time the overflow was detected, the alarm raised and...
01 Feb 2006 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Tigris and Euphrates rivers fragmentation
It has been predicted that access to water will create conflict between countries. In Africa, central Asia, west Asia and the Americas, some countries are already arguing fiercely over access to rivers and inland seas, a...
26 Jan 2009 - by Philippe Rekacewicz