Increased flows will also start coming out of Holter Dam as upstream reservoirs need to make room for all that snow still in the mountains of Southwest Montana. The fishing throughout the Holter Dam to Cascade stretch of the Missouri River will be good throughout, but the angler needs to focus on reading the water as it changes daily and have a solid selection of flies as well.
Here are the core flies that I am fishing right now on the Missouri River near Craig. These are great choices right now (and every Spring) as Blue Winged Olives are now showing up and the fish have been responding by keying in on both the nymphs and hatching adults when present.