تحليل توزيع فراواني خشكسالي هيدرولوژيك

Hydrological Drought Frequency Distribution Analysis Case Study: Ghareh Soo River Basin

This investigation reveals that the 43 years average amount at Ghareh Sooʹs minimum daily flow in Deh Kohneh gauge, located in kermanshah province is about 2.23 cubic meters per second. Similar minimum flow amount 7.15 cubic meters per second for duration of 30 days were estimated to beat 2.48, 2.57 and 3.74 respectively. As it is noticed minimum river flow amount, at the indication of hydrological drought occurrence is decreased by a decline in the probability at accordance. This is in a way that it amounts for a 200 year return period for duration at 1.7.15 and 30 days will reach to 0.40, 0.43, 0.45 and 0.52 cubic meters per second respectively which in nearly 3 of these average amounts.What is important is that there are not many variations for different durations? The study shows that the amount of one month drought duration does not much differ from one-day drought duration. Hence affect of different activities such at urban water supply, agriculture, natural resources and etc, is very important in its severity and danger regarding drought duration. Therefore, exercising crisis and risk management, plan and execution of program and activeties compatible with any activity suitable to amount and drought duration is very important.