Analysis of the tritium content of the water of the river Tagus at its confluence with thr river Tietar

This present communication is part of the framework of a much broader study aimed at first understanding in depth, and then modeling, the behaviour and evolution of the levels of radioactivity in solution of the water of the River Tagus in the Autonomous Community of Extremadura, where this river essentially constitutes a series of coupled reservoirs. To this end we analyze the effect on the levels of ''3 H in the Tagus water of dilution by the inflow from the River Tietar, and the relevance of the use of conductivity of the waters as a characteristic parameter of the same. (Author) 6 refs