An estimate of the irrigation potential over and above tt'e existing utilisation was made based on the ground water potential in the Vedavati fiver basin. The estimate is based on assumed crops and cropping patterns as per existing practice in the various taluks of the basin. Irrigation potential was estimated talukwise based on the available ground water potential identified from the simulation study. It is estimated that 84,100 hectares of additional land can be brought under irrigation from ground water in the entire basin.

ABSTRACT:Surface aeration experiments were conducted in two types of rectangular tanks of aspect ratios i.e., length to width ratio (L/W) of 1.5 and 2 and developed simulation equations to correlate the oxygen transfer coefficient, k and power number, P 0 with a parameter governing theoretical power per unit volume X. The parameter X is defined as equal to F, where F and R are impellers' Froude and Reynolds numbers respectively). Results have shown that the P 0 can not be simulated singularly with either Reynolds number, R or Froude number, F, which results in scaleeffects; there appears to be a need to incorporate the effects of both F and R. It was found that P 0 is uniquely related to X for rectangular aeration tanks of both aspect ratios, however, such relationships are different depending upon the aspect ratios. It has been demonstrated that energy can be saved substantially if the aeration tanks are run at relatively higher input powers. It is also demonstrated that smaller sized tanks are more energy conservative and economical when compared to big sized tanks, while aerating the same volume of water, and at the same time by maintaining a constant input power in all the tanks irrespective of their size.