Alison McAllister’s body was found in Maryhill, Glasgow near the Forth and Clyde Canal on March 20.
Police Scotland said the 56-year-old from Summerston’s death is being treated as unexplained.
Officers have now arrested and charged a 33-year-old man over an alleged serious sexual assault against Ms McAllister, reported to have taken place on the day her body was discovered.
A Police Scotland spokeswoman said: “A 33-year-old man has been arrested and charged in connection with a serious sexual assault of a 56-year-old woman near the Forth and Clyde Canal on March 20.
“Police continue to investigate the death of the 56-year-old woman, which remains unexplained at this time.”