ABSTRACT
Reservoirs behind barrages have a finite functional lifetime. Worldwide average lifespan of reservoir is about 22 years. Durgapur Barrage, India, built in 1955 across a high sediment laden straight River, Damodar (in the order of 300 mg/lit), still is working satisfactorily under the perpetual threat of capacity loss and sediment accumulation. 35% capacity of the reservoir has been reduced within 60 years from the design capacity 10.27 million cubic meter with an annual filling rate of 0.5% which is less the world average of 1% annually.. To minimize the stress of the existing procedure, through this paper, an additional methodology has been suggested under the surveillance of mathematical modeling, wherein a stretch of 66 km of the River Damodar and 14 Km long Barakar river have been modeled using MIKE-11. With the help of present analysis, the capacity, average velocity, water level and effect of dam discharges has been quantified.
