(This is definitely regional and species dependent, but here is a
umbrella statement)Starting around 50 degrees you will probably see the
most significant jump in activity, migrations can start in the Mid-40's,
but I really start catching them when the water is about 50 degrees.
There are exceptions to the rule, especially if you have a really warm
day, it warms up the back bays, but they might not hit that "magic"
number, but the fish will be feeding actively.
As for Winter, (I'm guessing you are referring fall into winter??) I
seem to stop catching them on my home lake when water hits 43
degrees(Smallmouth). Why so specific??? I have no idea. I caught them
really good in some areas for almost a whole week with the water between
45-47 degrees, but once that water hit 43 and lower , I was still
marking the fish, but I couldn't catch them to save my life, and that
was using float n fly and live bait. I dropped all the way down to a
1/80 ounce hair jig and 2lb fluorocarbon, same configuration I was
catching them on days earlier.

Chris
taylor_j25 wrote:
What water temperatures trigger bass to start the feed for the spawn
and winter?