Traditional geotechnical and geophysical investigations were conducted to determine the characteristics of a study site proposed for the construction of an electrical power plant in Al-Shamiyah city, Al-Qadisiya Governorate. These assessments are crucial for ensuring the durability of subsurface layers to support the foundations of engineering structures. The geophysical data consisted of twenty-three Ground Penetrating Radar profiles arranged perpendicularly to each other and nine points of Electrical Resistivity Sounding. These data were integrated with three types of samples—Disturbed, Standard Penetration Test, and Undisturbed—which were collected from nineteen geotechnical engineering boreholes. The samples were analyzed for soil classification, strength, consolidation, and chemical properties of both soil and water. The Ground Penetrating Radar profiles revealed several weak zones, while the resistivity survey points showed random values ranging 2 –16 Ωm at depths up to 20 m, indicating loose and incohesive soil. The findings from the geophysical data aligned with the geotechnical analysis, which classified the soil profile into seven distinct layers. Soil activity was assessed through the plasticity index and liquid limit, with an average elasticity index to clay content ratio of -0.53, suggesting poor clay activity. The in-situ allowable bearing capacity of the soil at depths ranging from 1.5  to 22 m was found to be between 4.0 and >17.0 T/m² across all boreholes. Sulfate (SO₃) content ranged from 0.112% to 0.527%. Groundwater levels were measured at 1.7 to 1.45 m, exhibiting high alkalinity content and moderate to high salinity.