Abstract
The climate parameters (rainfall, Number of rainy days and temperature) data for the period from 1941 to 2009 for Nasiriya were investigated. The output reflect minimizing the numbers of rainy days and means yearly precipitation in the Nasiriya station, with the maximizing the yearly mean temperature. The chemical properties of sixteen samples of the shallow groundwater of the Quaternary sediments at Rifai-Nasiriya district are examined. Groundwater analysis indicates that the values of pH, electrical conductivity (EC) and total dissolved solids (TDS) are in the range of (6.9 to 7.8), (1645 to 68509) µS/cm, and (1158 to 47956) mg/l respectively. The results of groundwater analyses show brackish to salty water classes and indicate slightly mineralized to mineralized water. The groundwater is of two catigories Sulphate group with three families (Na - SO4) and (Mg - SO4), while the second is Chloride group having two families, (Ca- Cl) and (Na - Cl). The evaporation and dissolution of the evaporate rocks (gypsum and anhydrite) are the main factors affecting the groundwater as well as the weathering of the carbonate rocks. The water is not good because of the high salinity for any usage.
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