Saskatchewan officials say the release of water at the Alameda reservoir in the province's southeast will not have any impact on communities downstream.
The Alameda dam is on Moose Mountain Creek near Oxbow, Sask., about 220 kilometres southeast of Regina.
Officials began increasing outflows from the reservoir on Thursday. The goal is to return the reservoir to its normal full level by August.
"This preventative measure will significantly reduce the burden created by the unprecedented runoff and rainfall in recent months and ensure the integrity of the dam," the province said in a news release.
"In addition, lowering water levels at Alameda dam will ensure there is adequate room for flood prevention, should higher water levels again become a factor in the area."
The province said the dam, which was built in 1995, has been performing as expected.