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۱Investigationof Water Balance Methods of Haqlan Basin in the Western Region of Iraq
اطلاعات انتشار: World Applied Sciences Journal، سي و چهارم،شماره۵، ۲۰۱۶، سال
تعداد صفحات: ۵
In this study, two water balance methods have been adopted to estimate the water excess for the Haqlan basin in the western territory of Iraq. The first method made use of the rainfall and actual evapotranspirationdata based on the monthly average within the period (1980–2010) and the second method estimated the parameters in each year in separation to estimate water excess. The study area is characterized as arid, thathas an annual rainfall 124.9 mm.The results of this study have demonstrated that the average water excess value in the first method was 10.2mm distributed into 8.74 mm as the surface runoff and 1.45 mm as groundwater recharge, whereas in the second method there was 20 mm distributed into 8.87 mm as the surface runoff and 11.13 mm as the groundwater recharge.The results of the annual method were more or less consistent with the results with previous studies which had adopted the monthly method. Therefore, the studyconcluded that the annual water balance serves as the best method in estimating water balance in the hydrological basins in arid regions due to the fact that their results are in line with previous studies in adjacent basins.
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