Haven't heard anything about Holter yet, but there is lots of good ice on Tiber.  There was an ice house set up over by the boat ramp next to the vets park, but didn't go over to see how they were doing.  But the willow creek branch of the lake is solid.  But everyone I've talked to doesn't think the big bite has started yet, but it's tough to tell with all the perch hitting the tip ups.  Good luck

Went out on Sunday to Willow Creek Reservoir on the Rocky Mountain Front.  Not much for fishing... managed two 14" Rainbows in about 3 hours.  Figured my time was better spent looking over elk and bighorn sheep so I drove over to the Sun River WMA and saw well over 500 elk on the WMA and 200-300 big horn sheep further up the canyon.

As for ice, it was looking good.  About 8 inches on Willow Creek.  It was warm, but the wind kept the ice from really melting.  I drove up to Gibson dam too.  Nobody was fishing and I wouldn't recommend anyone try.  There was probably 14" of ice, but the entire shoreline was broken up.  I suppose the water coming out of the dam was causing the ice near shore to breakup.

Other reports I heard were as follows:

Nilan reservoir was really hot a few days ago, a couple kids said they caught 30 trout in about 3 hours on Thur. the 8th.  Also about 8 inches of ice.

A-rod lake, I hadn't heard of it before, but apparently there are three pike and perch lakes about 60 minutes from Great Falls near the town of Brady.  All relatively small lakes, but a guy took his kids out there and caught a couple keeper pike and several smaller ones spending most of the time shooting BB guns and otherwise playing around.  Also about 8 inches of ice.