Congress Resources: Papers, posters and presentations

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Congress: 2008
Ph.D in Water Resources Engineering

Keyword(s): Scheme, allocation water , self financing attitudes
AbstractUnfavorable changes both in the environment as well as in the socio-economic fronts resulting from encroachment and draining of perennial swamps or wetlands could be noticed in different parts of the world. The present study area situated in the eastern part of India is no exception to this. Prior to transformation the said perennial freshwater wetlands were used to be natural fisheries, sanctuary for migrating birds and game reserves. The drainage around the wetlands were poor. Occasional floods used to cause severe damages to the surroundings. In view of public pressure against frequent floods and consequent damages and to meet up demand for additional lands for habitation as well as to practice agriculture, the Provincial Government of India had eventually drained off the wetlands totally. To facilitate draining a number of branch channels were also dug across the region. A pumping station was also installed along the course of the Main Canal to pump out accumulated runoff from the study area. Total draining had upset the hydrologic balance of the region. Now-a-days drying of shallow ponds /tanks, lowering of subsurface water table and water scarcity during monsoon are the regular features. Cumulative effects of all these over the years have not only transformed a wet area to a water -stressed region but also been affecting the economy of this backward rural area. The water stress conditions in the region has reached critical stage as actual per capita water availability per year has been found to be below 1000 cubic meter. One of the primary goal of the present investigation is to work out a water resources development `Scheme' by harvesting rainwater which is the only feasible water resources. From water budget study it has been observed that annually one third of the volume of total precipitation drains off as surface runoff due to lack of proper storage capacities. The volume of the excess rainwater that could be harvested has been ascertained by weightage scaling technique considering the constraints and likely benefits. Allocation of water for different uses is not always easy, however, not impossible if the basis of allocation strategy could be decided upon or known before hand. A rational approach is, therefore, necessary to formulate the priority as well as share of allocation of the harvested volume of surplus rainwater in the study area for different uses. Lack of effective organizational setups and non -availability of constant flow of funds in implementing water projects are the common features in developing countries. In anticipating the above mentioned constraints an innovative thought experiment (cash flow diagrams) have been suggested to implement a water project by harvesting rainwater. This mainly suggests the involvement of the direct beneficiaries having self-financing attitudes. Furthermore ,a conceptual model for proper organizational setup of the project( before and after implementation) have been suggested involving decision-makers ,planners, implementing bodies for sustainable basis.
2011 IWRA - International Water Resources Association - - Admin