Groundwater suitability for consumption in the Yaychi area is determined by analyzing groundwater samples of 21 wells distributed in the area, for dry period which begin from May to October 2016 and wet period begin from October 2016 to May 2017. Results indicated that the temperature (T °C) have normal values and the water of low alkaline and excessively mineralized, while most of these samples, for both periods, are slightly -brackish water. The mean ion concentrations for two periods indicates that all major and secondary ions are higher than water quality standards for drinking purposes according to World Health Organization (WQI) and Iraqi Standard (IQS) except for K and Cl ions. The water in the study area is classified as very hard. Kurolov formula shows the presence of three predominant salts MgSO 4 , Na 2 SO 4 and CaSO 4 , and the water origin in the area is meteoric water. The predominated of water types are " earth alkaline water with increased portions of alkalis with prevailing sulfate and chloride" and "Normal earth alkaline water with prevailing sulphate or chloride". After comparing the ionic concentrations with the water quality standards for different purposes, it was found that groundwater in the area is unsuitable for human drinking, but it's suitable for building and livestock and for growing most types of crops, it is also suitable for irrigation purposes depending on the sodium adsorption ratio (SAR), Soluble Sodium Percentage(Na%) and the Residual Sodium Carbonate (RSC), and unfit for irrigation according to Magnesium Adsorption Ratio(MAR) index. The water in the study area is devoid of heavy metal pollution except (Fe), (Pb) which are shown in water of some wells.
This study includes determining the climatic conditions and the nature of the reservoirs in the region with the determination of the flow direction and the hydraulic characteristics of the aquifer. The meteorological data for the Kirkuk station for the period showed that the values of the monthly rates of temperature, precipitation, evaporation, relative humidity, wind speed and Sunshine duration are (9.1 to 36.2 C), (0.03 to 65.8 mm), (51.4 to 412.7mm), (21.7 to 71.1%), (1.3 to 2.1 m / s), and (5.4 to 11.2 hour) respectively. And according to the annual rainfall rate is (348.13mm), found 18 years of the climatic period are wet years and 27 years are dry years. Thornthwait method was used to calculate the values of Potential Evapotraspiration (PE) then determine the annual value of WS and WD which equal 238.4mm and 852.8mm respectively. The study showed the existence of a shallow aquifer unconfined in the Quaternary deposits with the presence aquifer confined in the Bai-Hasan Formation. The flow net map is shown by mainly that the groundwater flow in the area, it is from the northeastern parts towards the southwestern parts. The information of single pumping test for five wells in the study area shows that the values of the transmissivity (T), hydraulic conductivity (K) and specific capacity (SC) were ranged from (88.1 to 829.7m2/d), (0.64 to 8.74m/d) and (33.28 to 295.75m2/d) respectively, where (T) and (K) calculated by using (AQTESOLV 4.5) software that depend on the methods of Cooper-Jacob and Theis recovery for analysis these information.Keywords: Climatic conditions. Hydraulic properties. Water surplus. Yaychi area. لم المناخية والظروف الهيدروليكية الخصائص تقييم يايجي نطقة العراق شمال كركىك/ غرب جنىب
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