Print Email Facebook Twitter Sustainable conjunctive use of groundwater for additional irrigation Title Sustainable conjunctive use of groundwater for additional irrigation Author Alam, N. Contributor Olsthoorn, T.N. (promotor) Faculty Civil Engineering and Geosciences Department Water Management Date 2014-06-10 Abstract Currently millions of private wells in the Punjab are pumping groundwater as an additional source for irrigation to compensate for irregular surface water supply. Since the 1990s, most of them are skimming wells that aim to reduce the salinity of the pumped groundwater. However, salinization continues to rise over time, often above acceptable limit, which threatens food production. This thesis aims to develop a solution to make groundwater use for additional irrigation sustainable, i.e., to limit the salinity of pumped water in the long run. Based on a model analysis, it was shown that skimming technologies cannot prevent salinization, irrespective of parameters of subsurface, for which some unique pumping tests were analyzed and geophysical measurements were carried out in the Punjab. Sustainability is sought in balancing both water and salt on the scale of field or farm. Both analytical and numerical models were used to show that the adopted concepts will work. Subject sustainable irrigationgroundwater managementirrigation recirculationskimming wellssaltwater upconinggroundwater modelinggroundwater conjunctive userecirculation wellssalt managementoptimal irrigation systemmultidepth pumping testsIndus BasinPunjabPakistanscavenger wellsbalanced scavenging wells To reference this document use: https://doi.org/10.4233/uuid:ba592df7-b8d9-4bdd-ae8a-645dccbc0220 Embargo date 2014-06-06 ISBN 978-94-6169-517-8 Part of collection Institutional Repository Document type doctoral thesis Rights (c) 2014 Alam, N. Files PDF SustainableConjunctiveUse ... N.Alam.pdf 6.61 MB PDF Propositions.pdf 60.51 KB Close viewer /islandora/object/uuid:ba592df7-b8d9-4bdd-ae8a-645dccbc0220/datastream/OBJ1/view