National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
This study deals with Hydrological study and aquifer characteristics evaluation of Wadi Arab Catchment area/Jordan; Wadi El-Arab covers an area of about 267 km2. The catchment lies between 210-230N and 208-230E according to Palestinian grids. There are several Wadis draining in the catchment area and no flow measurement data are available for these Wadis. The main objectives of this paper are to provide a hydrological and hydrogeological assessment for the water resources of Wadi El -Arab catchment area. Also to calculate the water budget and specify the different pollutants, their possible sources and their actual impacts on the groundwater resources. The determination of flows is carried out by applying the "Curve Number" approach of the "United States Soil Conservation Service (SCS)" to the available rainfall data. The average annual rainfall for the period 1980 -2018 is 426.42 mm, the rate of evaporation ranges between 83% in the wet year and 90% in the extremely dry water year. The infiltration rate ranges between 6.75 percent and10.61 percent. While the rate of Runoff ranges between 6.55 % in the wet year and 3.25 % in the extremely dry water year. The hydraulic system of Wadi El-Arab Basin is controlled by the geological and structural conditions, which also controls the recharge level, movement, and discharge of the groundwater. The aquifer systems of the entire study area are related to the Cretaceous Upper Ajlun Group (A7) to the Cenozoic Lower Belqa Group (B1 and B2) is the main aquifer for water supply in the study area. On its top, the A7/B2 aquifer is hydraulically separated from the locally productive B4 aquifer by the Muwaqqar aquitard (B3). The transmissivity of the (B2/A7) aquifer ranges from 9 m2/day to more than 900 m2 /day. The storage coefficient of this aquifer in the confined condition vary from 10-3 to 10-5, while the specific capacity vary from less than 0.01 L/s /m to more than 50 L/s/m and The permeability ranges from 0.01 to more than 100 m /day.
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