REDDING, Calif - The river flows in the Sacramento, Trinity and Feather Rivers have been fluctuating as dam operators need to release water.
The snowmelt makes the water much colder than it looks.
Just this weekend, Trinity County Search and Rescue saved two rafters who got stranded near the Douglas City Bridge when flows from the Trinity and Lewiston reservoirs became high.
Right now, water is running both cold and swift and it does not take long in the water for hypothermia to set in.
Signs of hypothermia people should be aware of are uncontrollable shivers, numbness, confusion and in severe cases, blue-grey skin.
If you're not sure if you should get out of the water, one method competitive swimmers use is counting down to ten then back up.
If you lose your train of thought then it's time to get out.