The paper summarizes results of tritium monitoring in Orlik Reservoir and longitudinal profile Vltava and Elbe Rivers. The monitoring was provided in vertical profile of Orlik Reservoir at profiles Podolský most, Zvíkovský most, Otava Štědronín (Plazy), Žďákovský most and Orlik dam.
Further, provided ideal mixing of waste water from Temelin NPP, tritium concentrations in Vltava at Kořensko were evaluated. Tritium concentrations were monitored in profiles Vltava at Solenice, Vltava at Prague Podoli and Elbe at Hřensko.
The assessed period was 2008-2013.