There is absolutely no reason for that waterbody to be closed to fishing.
Makes me mad just thinking about it.
It was open for a short time several years ago. I can still remember hooking on to those rainbow hogs when they were 'accidently' released....not to mention I hooked and landed some of my biggest 'local' cutties ever.
I didn't know they had closed it when it happend and they built a walkway on the water....so one day after fishing another body of water, I stopped there to take a look. When I noticed the walkway, I grabbed my trout rod and put on a 'kroc', cast out about 100 feet and hooked a 23 inch cutthroat on the first cast. The fish in there are huge....tonnes of feed, and even though the cutties were moody at times, I would always land a couple of trophies.
Again....a crying shame to close down such an awesome local float tube fishery.