I ran Pumphouse on Sunday and there was no ice on the water in either of the canyons, some places still had heavy sheet of ice on the banks but nothing in the water. I wold imagine Gore is fully open as well. I also did see some kayaker that day that looked like they were running shuttle for Gores so you should be good to go.
Full disclosure: I suck at spelling and grammar, so if you find an error, great! Keep it to your self I don't care!