Rispiningtati
Many water planning researches have been done but water pricing has not been considered as the prime factor. Cost allocation is required whenever a project deals with multi-purpose groups. An optimization model which is accommodatingthe water allocation and water price must be developed in Indonesia. The new linear optimization model is developed to present a method for the determination of equitable impact fees and optimal water allocation for large water systems. The proposed method is demonstrated on a river system with 13 major dams. Each reservoir system serves 5 uses (irrigation, hydro-electric and flood control, industrial and domestic need). Using optimization with cost of dam and its facilities as target and the objective function is maximization of total net benefit of user income, water allocation as X variable and water price as Y variable will produce the optimal result. The result is the optimal water allocation with minimal water price which is present on 3 simulation analysis. The result of m del is in a graphic and table presentation, which can be use easily to determine the water allocation and water price per m3 in all reservoir system.The equation optimization result of multiple reservoir on Model I, which is theallocation increases and water price decreases is Y = 250.88 X-0.3315. While on Model II which is the allocation increases andwater price increases is Y = 0.09 X0.91.ForModel III which is thewater price is equate to benefit the equation is Y = 0.09 X0.90. © Research India Publications.
Brawijaya University, Water Resources Engineering Department, Malang, 65145, Indonesia
