When in a forest or an wild area where there is a lake/river, when temperatures is 0° to -10° Celcius, why wont the water freeze into ice?

Question

When in a forest or an wild area where there is a lake/river, when temperatures is 0° to -10° Celcius, why wont the water freeze into ice?

In: 1

Answer 1

i saw in a couple of yt videos and stuff where at locations they said its under 0° Celcius but there’s a river/lake where the water isn’t ice, yet water freezes at 0° celcius