A search was underway of the Whitesand River after police were told that an adult man fell into the water Tuesday during the noon hour.
Police from the Canora detachment of the RCMP said they were called to the Canora Dam at 12:30 p.m. CST.
Officers from the Kamsack detachment also joined the search. A canine unit was also brought in along with the RCMP underwater team.
Local rescue volunteers were also helping.
On Tuesday evening, RCMP said the search was suspended when night fell but would resume at daylight.
The Canora Dam is located approximately four kilometres east of the town. Canora is about 230 kilometres northeast of Regina.