Puddle now breaking issues

[AnotherOldJeepGuy]

I was on my way home a yesterday and not far from the house there was a puddle, maybe 12ft long, at the deepest probably 4" or so.  It was a side alley coming up on a stop sign so I was going pretty slow, probably 10-15mph.  After going through the puddle I continued home, which was about another 100 yards or so.  By the time I got to my driveway there was quite a moaning sound from FR side with noticeable vibration when brakes were applied (this is the side the puddle was on).  I eased to a stop in my normal parking place.  I was assuming that since this was obviously because something go wet, once it dried out it would be back to where it was before the puddle.  Just went out and moved back and forth a dozen times or so with varying amount of brake force.  Still making varying degrees of groaning noise with vibrations.  And I think RF is actually locking up as I get close to a stop.

 

What got messed up by getting wet?

 

Worth noting here is I replaced rotors, bearings and pads about a year ago to get rid of a moan in the front while driving, which was successful and all has been fine until creeping through this puddle.  Oh, there was no pothole in the puddle, it was a smooth slow run through the puddle.

 

Thanks