With Winnipeg's mild December weather comes an increased risk of danger around waterways, emergency crews in the city say.

"Areas of the river that appear calm can carry dangerous currents," Winnipeg Fire Paramedic Chief John Lane said by way of press release on Thursday, adding that ice thickness is unpredictable.

"These are preventable incidents with sometimes tragic consequences. There really is no reason to be near the water."

Lane's staff and the Winnipeg Police Service are encouraging parents and teachers to speak to children about staying away from the floodway, drainage ditches and culverts, streams, creeks, retention ponds, and rivers.

Falling into ice-cold water can be deadly, the crews say.

"Ice that is a foot deep in one location can be razor thin only a few feet away," said Sgt. Kevin Pawl.

"Only approved areas that have been tested for use should be considered safe."

The Fire Paramedic Service responds to an average of 200 water and ice safety calls each year.