Good luck with runoff this time of year, and careful around Whitefish that place is alot of fun and you may get stuck in the party. LOL When I was up there last the water was way too high to fish so we went back down South to some "Smaller" Creeks like Rock Creek. However, we did fish it for a couple hours and stuck a few cutties and bows even one bull. Here's a little beta I pulled up:

http://www.fs.fed.us/r1/flathead/fis...head_river.htm

http://waterdata.usgs.gov/mt/nwis/uv/?site_no=12355500

Check out this new cool weather site too just found it really interesting:

http://weatherspark.com/#!graphs;a=USA/MT/Whitefish

PS They prefer North Fork