Interaction between canal water and groundwater in the Uda Walawe irrigation system:hydrochemistry and isotopes
Mauro Prado, Kevin Hiscock, Lorraine Rajasooriyar, Eline Boelee
Universities of East Anglia , Jaffna & International Water Management Institute
Presented at Session C "Innovation and Technologies" of International Symposium 2010, Ruhuna University, Sri Lanka
November 16, 2010
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Interaction between canal water and groundwater in the uda walawe irrigation system hydrochemistry and isotopes
1. Interaction between canal water and groundwater in the Uda Walawe irrigation system:hydrochemistry and isotopes Mauro Prado, Kevin Hiscock, Lorraine Rajasooriyar, Eline Boelee Universities of East Anglia , Jaffna & International Water Management Institute Presented at Session C “Innovation and Technologies” of International Symposium 2010, Ruhuna University, Sri Lanka November 16, 2010
2. Outline Approach Study area: geology and sampling points Sampling results and analysis Discussion, conclusions and recommendations
3. Approach Isotope study; part of a larger research project Objectives Understand determining factorsof groundwater quality Interactions between surface waters and groundwater Consequences for management Mapping Water infrastructure, geology, land use Results Sampling Analysis
4. Study area: Uda Walawe irrigation system Average Temp 28°C Humidity 77% ETpot 1988 mm Rain 1979 mm Etpot:Potential Evapotranspiration Source: IWMI, 2002
18. Variation between surface and groundwater in terms of physical and chemical featuresSource: Created by Eline Boelee for the purpose of this presentation
19.
20. More pronounced for deeper groundwaterSource: Created by Eline Boelee for the purpose of this presentation