It is really hard to maker a judgement call on water flow by looking at exhaust
output. You literally have to measure it in a bag or a bucket.
Your engine temp is not high at all. The engines thermostat does not begin to open until about 165 F. If you are seeing white smoke this time of year it can very likely be the cooler air temps and you are seeing steam. Particularly up north.
If you are concerned with water flow check impeller, check heat exchanger core
ends for blockage or buildup and go ahead and remove and clean the heat exchanger core
if you have not done so in the last 3-4 years.