the freezing up of a river

It would be nice to live right on a river for a while (not for long time, but that it is another story)
But to keep a daily journey on how it freezes over a period of one winter.
The Takhini river at this particular spot, was frozen  earlier, then opened up again and now with this cold the ice builds up rapidly,  the first picture taken an hour after the second one.
Maybe i go back tomorrow.
As the freezing-over here has more to do with building up of ice-floes, i wonder if it freezes over faster in this temperature, then when it is even colder and no ice-floes break off upstream, to build up here. Is their a turning point?