Yellowstone Park Waters

August 20, 2018

Fishing Conditions

August 20, 2018

This is a productive time of the year for fishing in the Park. The nightly temps are nice and cool which help to keep water temps down while valley bottoms outside the Park can begin to get warm. The Northeast corner has really kicked in, and there is dry fly fishing on all of the rivers and streams. Yellow Sallies are a good fly to take for the mid-day hours in this part of Yellowstone. The upper Yellow, below the Lake, has sippers in the evenings on PMD's and Caddis. The Firehole and the Madison are fishing the best in the morning and then again in the evening. This is due to the warmer water temps. The Gallatin inside the Park has good fishing with great water temps,resulting in a hatch of Goldenstones. A few of the Spruce Moths have made it out of the forest, so throwing spruce moth patterns or smaller black/tan chubbies are a good bet. 

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Fly Pattern Suggestions

Dries: Griffiths Gnat: 18-20, Quigley's Cluster: 16-20-24, Matt's Midge: 20-24, Biot Midge: 20-22, Purple Haze: 14-16-18: HiVis Paraemerger BWO: 16-18, HiVis Parachute BWO: 18-20-22, Ex-Body BWO: 16-18-20, Film Critic BWO: 16-18-20, Last Chance PMD: 16-18-20, Hackle Stacker PMD: 16-18-20, Tilt Wing Dun PMD: 16-18-20, Elk Hair Caddis, Tan: 12-14-16, Cutters E/C Caddis, Tan: 14-16, Snowshoe Caddis, Tan: 14-16-18, Headlight Sally: 14-16-18, Slow Water Sally: 14, Never Sink Sally: 14-16, Water Walker: 10-12-14, Yeager 409: 12-14-16, PMX: 8-10-12-14, Chubby; orange, gold, royal: 8-10-12-14,

Nymphs: Zebra Midge: 16-18-20, Purple Death: 14-16-18, BHFB Pheasant Tail: 12-14-16-18, BHFB Hares Ear: 12-14-16, Dirty Bird, Hares Ear: 10-12-14-16, Grand Poopah, Tan: 14-16, Serengold, Tan: 12-14-16, Lil Spanker, Pheasant Tail: 12-14-16

Streamers: Zonker, Black: 4-6-8, Wooly Bugger, Black, Brown: 4-6, Simi Seal Leech: 8, Hale Bopp Leech: 8, GB Crystal Bugger, Black: 6-8-10

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