It's shaping up to be the hottest weekend so far this summer and while many Calgarians will try to cool over with a float down the rivers, the fire department would prefer people to choose another way.

In May, fire department officials issued an advisory about the dangerous conditions on the Bow and Elbow rivers caused by hazards in the water. On Friday, they said that the advisory is still in effect and they are hoping people will stay off the rivers this weekend due to the risks posed by fast water and poor visibility.

"Rocks and trees have been dislodged. The riverbanks are still unstable in areas and also [there is] household debris that has been washed downstream," said Carol Henke, spokesperson for the Calgary Fire Department.

At least one person has drowned in recent weeks and Henke says the rivers are dangerous, even for experienced paddlers.

She says people should also remember that it's illegal to drink on the waterways.

Calgary police and bylaw officers will be out in force over the weekend to make sure everyone who does head onto the rivers follows the rules.