Abstract: The victims of drowning can be found in almost all places every time since there are moats, wells, rivers, ocean or seas surrounding us and even the water in pail in bathroom. Checking up on the victims of the drowning can be considered as the murder. The important point to consider is related to the determination of whether the victim died in the river or has been died outside and drowned. Diatome is as the diagnostics means to know the location of the drowning before died, by the way of comparing the diatome found in the body of the victim with the diatome water considered as the place for the drowning.