Watch for increased flows on the South Saskatchewan River this weekend.
The Water Security Agency is advising the flow will increase between the Alberta border and Lake Diefenbaker due to significant rainfall in southern Alberta and southern Saskatchewan.
"In preparation for this rainfall," the WSA said in a release. "Alberta began increasing reservoir releases this past week to make room for storage in its reservoirs in the impacted area."
They expect large amounts of precipitation in a short period of time to increase runoff into the South Saskatchewan River and other waterbodies between the western border and Lake Diefenbaker.
The WSA noted an expected flow increase along the South Saskatchewan River from 100 cubic meters per second (m3/s) to around 830 m3/s.
They expect peak flows to occur around June 26 of next week.
"Lake Diefenbaker has sufficient storage to capture the increases in inflows," the WSA release said. "But WSA will increase outflows on the South Saskatchewan to better manage the expected increases to lake levels at the reservoir. WSA expects lake levels at Lake Diefenbaker to rise over 1 m in the next 10 days as a result of this weather system."
They're expecting outflows on the South Saskatchewan River between Lake Diefenbaker and Saskatoon to increase from their current rate of 65 m3/s to 75 m3/s.
"WSA advises the public to always take sensible precautions around lakes and rivers and be aware that flows and levels can change rapidly and without warning," their release noted. "Please check local conditions before venturing on or near water bodies."