The water is still quite high, about 3 meters below full pool, so bank access will be a challenge, but there is always places that are accessible if you look hard enough. I have never fished from the bank there, so I can't be much help on areas other than around the main ramp area at the JuJin bridge area.
I was going to go this weekend, but due to the way it's fishing I decided to give it a miss. I'll probably start heading up there in March.
The water temps at Andong last weekend were around the 5c / 40f mark, while Hapcheon is usually a few degrees warmer than Andong.
Good luck and let us know how you get on.