Drowning data from past years shown a large number of people pass away accidentally in rivers, ponds, lakes and oceans. A Forensic expert can locate the probable or putative site of drowning by considering the diatom test. The present review focused on the investigation of drowning death is an essential aspect for the law enforcement agencies. However, a limited or little knowledge of forensic experts in the field of diatomology can hamper diatom related analytical strategies. Review implicate the progress and generation of Diatomological mapping of water bodies to make more conversant the scientists, researchers and other academician dealing with the investigation of drowning cases.