Water Resources and Their Transformation Model in Urumqi River Basin

According to the formation,the transformation regularity and the use of water resources in the arid area of Northwest China,a water resources transformation model in the Urumqi River basin is developed by using the plentiful information of surface and ground water,and the geohydrologic condition.The results of the model show that the actual water withdrawal and net water usage exceed the maximum and net water usage at the present condition respectively. Moreover,the net water usage even surpasses the total water resources.The water resources are overexploited obviously.thus,it is ineffective to increase the potential water usage by further improving the utilization rate of canal system at the present situation.A promising way is to set up a new water balance between supply and demand only by means of saving water and increasing the utilization rate of water.