The Water Security Agency (WSA) says the high streamflow advisory continues for the Churchill River System, with a risk of localized flooding, and says there is also a heightened risk around Prince Albert due to rapidly increasing flows on the North Saskatchewan River.
In a release, the WSA says it is expecting a peak flow of 2,000 cubic metres per second (m3/s) in Prince Albert by Friday. That’s up from the original estimate of 1,500 m3/s announced last week.
The agency says it’s mainly due to increased flows from Alberta, combined with recent rainfall in the North Battleford region.
Residents living in those areas are reminded that high flows pose a safety risk and high water levels could damage property and infrastructure over the coming days.
Those who use the waterways are advised to use caution around the watercourses within the basin, as swift-moving water can pose a hazard, and to take steps to protect property where necessary.
The WSA says there is a risk of localized flooding Thursday for the Churchill River System.
The high flow event making its way down the Beaver River is resulting in increasing flows below Green Lake.
The WSA says peak flows are expected in the Beauval area in early July and Ile-a-la-Crosse is expected to peak in mid-July. Peak flows on the system are exceeding or expected to exceed 2017 levels and approach the record levels seen in 1974.
The WSA and the Saskatchewan Public Safety Agency have been working with communities at risk, implementing flood mitigation measures.
Lac La Ronge is still at elevated levels. Lake levels will continue to rise over the next couple of weeks, but no flooding is expected.
Flows into Reindeer Lake are at a record high and the lake is currently at Full Supply Level. Flows out of Reindeer Lake from Whitesand Dam have been increased, but are not yet at full capacity. The high flows from Whitesand Dam combined with flows on the Churchill River will result in the highest flows on record at Island Falls and Sandy Bay, exceeding the flow of 2,300 m3/s that was experienced in 2005.
It is expected the water levels will rise over the next few days, and flows will cause localized flooding downstream of Island Falls.
The WSA says it is actively involved and working with SaskPower on release plans to minimize damage and is notifying downstream stakeholders. Flows are well above normal at all locations east of Peter Pond Lake and will remain at above-normal levels into the winter months.
Landowners near the Beaver River are also advised to be aware of the situation and any potential impacts to property.