Linking of rivers in trans-boundary river basin system is a good idea for its water resources development to meet ever rising water demands; where water needs exceeds its availability. The latter is never ensured or properly estimated, due to several reasons. River linking involves mega projects. Although, their implementation a herculean task. Will power, funds, man power, infrastructure, facilities, time etc. would be present and available. But, there would be conflicts, controversies, uncertainty, ambiguity, fight, dozen questions, confusion, war etc. The reason; in a trans-boundary river basin or otherwise, being not sure of which water, what water and why water; further whose waters, but from where and when but then for whom! These are the basic answers needed for its success. It is not so simple to determine. The Questions are numerous and wide spread; and are to be answered in space and time. An attempt of optimal integrated trans-boundary river basin water resources development should certainly overcome this burden. The hint is towards opting and carrying out optimization-simulation modelling approach. This integrated approach does provide solutions to almost all untold answers of water resources development and management of river basins. The task at hand is huge and enormous; is multi-disciplinary, multi-objective, and multi-stakeholders; and is very data extensive. D.K. Srivastava

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Linking of rivers in trans-boundary river basin system is a good idea for its water resources development to meet ever rising water demands; where water needs exceeds its availability. The latter is never ensured or properly estimated, due to several reasons. River linking involves mega projects. Although, their implementation a herculean task. Will power, funds, man power, infrastructure, facilities, time etc. would be present and available. But, there would be conflicts, controversies, uncertainty, ambiguity, fight, dozen questions, confusion, war etc. The reason; in a trans-boundary river basin or otherwise, being not sure of which water, what water and why water; further whose waters, but from where and when but then for whom! These are the basic answers needed for its success. It is not so simple to determine. The Questions are numerous and wide spread; and are to be answered in space and time. An attempt of optimal integrated trans-boundary river basin water resources development should certainly overcome this burden. The hint is towards opting and carrying out optimization-simulation modelling approach. This integrated approach does provide solutions to almost all untold answers of water resources development and management of river basins. The task at hand is huge and enormous; is multi-disciplinary, multi-objective, and multi-stakeholders; and is very data extensive.

D.K. Srivastava