Dry conditions are causing the province to cut back the amount of water it lets out of Lake Diefenbaker.
Patrick Boyle, a spokesperson for the Water Security Agency, said the inflows from Alberta that feed the lake via the South Saskatchewan River have been lower than expected.
“The runoff from the foothills and the plains portion of Alberta, you know, it was earlier than normal and it was below normal,” he said.
Boyle said it’s a similar story with the runoff from the mountains into the river’s headwaters — they peaked in mid-April and were below normal.
Dry conditions in Alberta also make it more likely that more water will be diverted for irrigation there before it flows into Saskatchewan.
The situation is causing the WSA to lower the outflow out of Lake Diefenbaker from 120 cubic metres per second to 80.
That should lower the South Saskatchewan river by about 10 centimetres downstream from the reservoir.
Boyle stressed that although the inflows have been low, Lake Diefenbaker is still sitting within the normal range for this type of year. He said they will still have enough water to cover what farmers need for irrigation.