Future Scenarios of Surface Water Resources Availability in North African Dams

2017 ◽  
Vol 32 (4) ◽  
pp. 1291-1306 ◽  
Author(s):  
Yves Tramblay ◽  
Lionel Jarlan ◽  
Lahoucine Hanich ◽  
Samuel Somot
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Future Scenarios ◽  
North African ◽  
Surface Water Resources ◽  
Water Resources Availability

Climate change impacts on water resources in North African basins

2020 ◽  
Author(s):  
Yves Tramblay ◽  
Denis Ruelland ◽  
Lahoucine Hanich ◽  
Zoubeida Bargaoui ◽  
Hammouda Dakhlaoui
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Water Resources ◽  
North Africa ◽  
Climate Model ◽  
Regional Climate ◽  
Climate Change Impacts ◽  
North African ◽  
Surface Water Resources ◽  
Climate Model Simulations

<p>Countries in North Africa are facing water scarcity and a high inter-annual variability of precipitation. In this context, many dams have been built to collect surface water and improve the management of existing water resources. We present the main results of a recent MISTRALS-ENVIMED research project about the potential climate change impacts on water resources at the regional and basin scales. The project notably focuses on the uncertainties linked to the different components of the modelling chain required to produce hydrological scenarios. Climate change impacts on surface water resources are investigated using an ensemble of regional climate model simulations from the CORDEX experiment under different emission scenarios and different hydrological models, adapted to the context of data scarcity. Climate scenarios under RCP4.5 and RCP8.5 over North Africa indicate a future decrease in precipitation together with an increase in temperature that could have significant impacts on water resources. Indeed, a future decrease of surface water availability is expected in all major dam catchments, with a stronger decline over Morocco.</p>

Surface Water Resources

1958 ◽  
Vol 123 (1) ◽  
pp. 1206-1213
Author(s):  
Joseph V. B. Wells
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Surface Water Resources

scholarly journals Assessment of a Large Subsurface Controlled Drainage and Irrigation System: III. Water chemistry of the tile effluent and its potential impact on surface water resources

2010 ◽  
Vol 44-45 (2010-2011) ◽  
pp. 11-17
Author(s):  
Michael Aide ◽  
Indi Braden ◽  
Neil Hermann ◽  
David Mauk ◽  
Wesley Mueller ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Irrigation System ◽  
Subsurface Drainage ◽  
Soil Conditions ◽  
Soil Nitrate ◽  
Controlled Drainage ◽  
Surface Water Resources ◽  
Nitrate N ◽  
Nitrate Concentrations

Abstract Controlled subsurface drainage irrigation systems promote crop productivity; however, these land management systems also allow an efficient pathway for the transport of elements from soils to surface water resources. The nitrate and macro-element effluent concentrations from tile-drainage involving a 40 ha controlled subsurface drainage irrigation system are described and compared to soil nitrate availability. Soil nitrate concentrations generally show an increase immediately after soil nitrogen fertilization practices and are sufficiently abundant to promote their transport from the soil resource to the tile-drain effluent waters. The data indicates that: (1) the transport of nitrate-N in tile-drain effluent waters is appreciable; (2) denitrification pathways effectively reduce a portion of the soil nitrate-N when the controlled drainage system establishes winter-early spring anoxic soil conditions, and (3) the best strategy for reducing nitrate-N concentrations in tile-drain effluent waters is adjusting N fertilization rates and the timing of their application. The development of bioreactors for simulating wetland conditions may further limit nitrate concentrations in surface waters because of soil drainage.

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