Streamers are becoming more important on all waters. BWOs are becoming important on many streams, especially in the Madison River drainage. Cold weather will soon begin taking its toll on hoppers, and other terrestrials. But for now stick with them on Slough Creek, Soda Butte Creek, Lamar River, Gallatin River, Gardner River, Duck, Grayling, and Cougar creeks, and Fall River Basin streams. Beula Lake remains one of the best places in the Park for great fly-fishing action.