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Saskatchewan Watershed Authority forced to release water from dams

Jun 22, 2011 | 7:50 AM

Tuesday was another day of rain in southeast Saskatchewan, meaning more water in areas already plagued by flooding.

The Saskatchewan Watershed Authority (SWA) released close to a foot of water from the Boundary Dam Tuesday morning and another foot Tuesday afternoon.

SWA spokesperson Dale Hjertaas says the authority's water system is full.

“Essentially the system is absolutely saturated from the spring run-off and then the rain,” said Hjertaas. “So what's happening is each new rain finds it more saturated and even greater portions of the water runs off into the system.”

Hjertaas says they have no choice but to release water from both the Boundary and Rafferty dams.

“Everything is full. The river channels are full, the sloughs are full, and the now the reservoir capacity is full, as well having been used as previous storage. Each time it rains more of the water is moving on downstream and producing flows none of us have seen before,” said Hjertaas.

The Boundary Dam's outflow is at 260 cubic metres per second with the outflow from the Rafferty Dam staying stable at 500 to 510 cubic metres per second.

Those numbers are producing record setting flows of up to 760 cubic metres per second.