The contribution of geophysical methods in the determination of aquifer parameters: the case of Mornos River delta, Greece ⊗

Abstract: Knowledge of hydraulic conductivity and transmissivity is essential for the determination of natural water flow through an aquifer. Although these characteristics are mainly deduced from pumping test analysis, attempts have been made to employ geophysical methods in order to reduce the amount of hydrogeological observations and the resulting cost. Use of layer thickness, as derived from the interpretation of resistivity soundings data and hydraulic conductivity calculated on the basis of both hydrogeological and geophysical data led to the calculation of aquifer transmissivity. This technique was used for the determination of aquifer parameters in Mornos River Valley at central Greece. Maps of the basement relief, resistivity, transmissivity and Transverse Resistance provided the means to identify areas where the aquiferous zone is prolific. The good agreement between aquifer hydraulic conductivities obtained from the resistivity soundings interpretation and those deduced from pumping test analysis emphasizes the potential of the methodology