Prathapar, Sanmugam A.'s Books

Methods to investigate the hydrology of the Himalayan springs

a review

By: Chinnasamy, Pennan,Prathapar, Sanmugam A.

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Methods to investigate the hydrology of the Himalayan springs

a review

By: Chinnasamy, Pennan,Prathapar, Sanmugam A.

Springs are the major source of freshwater in many small mountainous watersheds within the Himalayan region. In recent years, their flow rates have diminished, but the reasons for this are not self-evident, and hence this paper reviews the methods to investigate Himalayan springs. The review reveals that chemical and isotope analyses – mostly water dating and stable isotope (e.g., d18O) analyses – could be an appropriate entry point to commence field investigations, because of their potential to map complex spring pathways, including linkages between aquifers. This should be combined with the building of hydrogeological maps with the available data. Output from desktop analyses, field investigations and hydrogeological maps could then contribute to the establishment of a conceptual model, which could form the basis for a numerical model.

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International Water Management Institute (IWMI).

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ISBN 10

929090836X

ISBN 13

9789290908364

Reviving the Ganges water machine: potential and challenges to meet increasing water demand in the Ganges River Basin

By: Amarasinghe, Upali A.,Muthuwatta, Lal,Smakhtin, Vladimir,Surinaidu, Lagudu,Natarajan, R.,Chinnasamy, Pennan,Kakumanu, Krishna Reddy,Prathapar, Sanmugam A.,Jain, S. K.,Ghosh, N. C.,Singh, S.,Sharma, A.,Kumar, S.,Goel, M. K.

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Reviving the Ganges water machine: potential and challenges to meet increasing water demand in the Ganges River Basin

Although the Ganges River Basin (GRB) has abundant water resources, the seasonal monsoon causes a mismatch in water supply and demand, which creates severe water-related challenges for the people living in the basin, the rapidly growing economy and the environment. Addressing these increasing challenges will depend on how people manage the basin’s groundwater resources, on which the reliance will increase further due to limited prospects for additional surface storage development. This report assesses the potential of the Ganges Water Machine (GWM), a concept proposed 40 years ago, to meet the increasing water demand through groundwater, and mitigate the impacts of floods and droughts. The GWM provides additional subsurface storage (SSS) through the accelerated use of groundwater prior to the onset of the monsoon season, and subsequent recharging of this SSS through monsoon surface runoff. It was identified that there is potential to enhance SSS through managed aquifer recharge during the monsoon season, and to use solar energy for groundwater pumping, which is financially more viable than using diesel as practiced in many areas at present. The report further explores the limitations associated with water quality issues for pumping and recharge in the GRB, and discusses other related challenges, including availability of land for recharge structures and people’s willingness to increase the cropping intensity beyond the present level.

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IWMI

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ISBN 10

9290908424

ISBN 13

9789290908425

Mechanically Reclaiming Abandoned Saline Soils

A Numerical Evaluation

By: Sanmugam Ahembaranathan Prathapar,Asad Sarwar Qureshi

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Mechanically Reclaiming Abandoned Saline Soils

A Numerical Evaluation

By: Sanmugam Ahembaranathan Prathapar,Asad Sarwar Qureshi

Tests the hypothesis that timely surface cultivation before monsoon or winter rains in semiarid and arid areas will assist reclamation of abandoned saline soils. The effect of surface cultivation, monsoon rains, depth to water table, and ground water salinity on secondary salinity are evaluated using a numerical model, SWAP93.

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IWMI

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ISBN 10

9290902027

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9789290902027

Book's by Prathapar, Sanmugam A.

Methods to investigate the hydrology of the Himalayan springs

Methods to investigate the hydrology of the Himalayan springs

Reviving the Ganges water machine: potential and challenges to meet increasing water demand in the Ganges River Basin

Reviving the Ganges water machine: potential and challenges to meet increasing water demand in the Ganges River Basin

Mechanically Reclaiming Abandoned Saline Soils

Mechanically Reclaiming Abandoned Saline Soils

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