Dipartimento di Fisica - Università di Bologna - INFN Sezione di Bologna - Italy

abstract - Here we report the results of a new analysis of the data obtained in the framework of an experiment consisting of the measurement of the gravitational signal induced by varying the water mass of a lake. a more precise calibration of the superconducting gravimeter used in the experiment has been performed with the use of an absolute instrument; furthemore, a knowledge of the absolute amplitude of the solid earth tides of the station have been improved. The result of this analysis shows an agreement between data and Newtonian theory to within a 0.17% level.