More water kept in Lake Diefenbaker; S. Sask. River level to drop

Saskatchewan’s Water Security Agency will again reduce outflow from Lake Diefenbaker beginning June 30.
The agency said the daily average release will drop from 80 cubic metres per second to 60 m3/s to maintain levels in the reservoir.
Inflows from the Rocky Mountains are expected to be well below normal from June to September, the agency said. Above normal temperatures and little precipitation are resulting in more evaporation, which is also affecting the lake level.
The reduced outflow will mean the South Saskatchewan River downstream of Gardiner Dam will drop by about 0.14 metres from current levels. Through the city of Saskatoon the level will drop 0.05 metres upstream of the weir, and then 0.11 metres downstream of the weir.
Lake Diefenbaker is currently at 554.25 metres, or about 0.67 metres below normal for this time of year. The WSA said its current forecast suggests this could be the sixth lowest peak elevation in 45 years.
The agency will issue a water supply outlook in early July to update the situation province-wide.

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