Snake River
The Snake is in her typical autumn prime and fishing lights out on almost every reach.  Hatches include Claassenia stoneflies (mutant stones), PMDs, mahogany duns, caddis, and hecubas.  Water temps are chilly in the morning so fishing is a bit tougher but by 11am action picks up steadily gets better through the afternoon and into early evening.  The morning hours are fishing best with large surface attractors and streamers along banks and structure and in deeper riffles and seams with nymphs.  In the afternoon, these patterns and holding water types continue to produce, but there is better action with mayfly and caddis imitations in riffles, seams, confluence points, and eddies.  Dry-dropper rigs are also producing in these waters.
Effective dry flies – Circus Peanuts, Will’s Winged Chernobyls, JH-22 Stones, Chubby Chernobyls, Rubber Legged Double Humpies, Parachute Extended Body PMDs, Mahogany Duns, and Drakes, Comparaduns, Booty’s PMD Emerger, Quigley Cripples, Film Critics, Parachute Adams, Parachute Mahogany Duns, Booty’s Drake Emergers, X-Caddis, and Elk Hair Caddis.
Effective nymphs – Lightening Bugs, Copper Johns in red or olive, Rainbow Warriors, Hare’s Ear Nymphs, Booty’s Deep Stinker Nymphs, Flashback Pheasant Tail Nymphs, and Bubbleback Pheasant Tail Nymphs.
Effective streamers – Quad Bunny Leeches, Sex Dungeons, Sculpzillas, Strung-Out Leeches, SRA Double Bunnies, Murphy’s Bling Minnows, Bow River Buggers, Chicklett’s, and Lite Brite Zonkers.

South Fork
Flows from Palisades Dam have been ramping both up and down over the past two weeks and this has displaced trout from their typical holding water.  Fishing can be a bit challenging but it is still quite good if you target the right areas and be vigilant in your fishing.  Prevalent emergences over the past week include Claassenia stoneflies (mutant stones), PMDs, caddis, and mahogany duns.  The best route to go over this past week is to target riffles and seams with large attractors and nymphs fished in combination as a dry-dropper rig.  Double nymph rigs are also working in the same water.  Smaller mayfly and caddis imitations are producing in an inconsistent manner but when a hatch is on, the best water to fish is on flats and riffles.
Effective dry flies – J-Slams, Circus Peanuts, Barrett’s Stone Fly, Bean’s Orange Crush, Chubby Chernobyls, Will’s Winged Chernobyls, Stimulators, Kasey’s Creature, X-Caddis, Quigley Cripples, Parachute Extended Body PMDs and Mahogany Duns, Snowshoe Duns, Comparaduns, and Parachute Adams.
Effective Nymphs – Pat’s Rubber Legs, BH Rubber Leg Hares Ear Nymphs, Lightening Bugs, Rainbow Warriors, Copper Johns in red or olive, Zug Bugs, Booty’s Deep Stinker Nymphs, and Bubbleback Pheasant Tail Nymphs.
Effective streamers – Sculpzillas, Marabou Clousers, Kiwi Muddlers, Marabou Muddlers, J.J Specials, and Angel Eye Sculpins.

Flat Creek
Flat Creek has been fishing very well over the past week and will probably get even better as we get deeper into September.  Emergences include PMDs, tricos, mahogany duns, and caddis.  Generally fishing has been best in the morning and the evening but with the cooler weather this past week we have had good fishing well throughout the day.  As usual, light tippet and a gentle presentation will get you into the larger cutthroats.  One upside is that at this time of year crowds tend to die down quite a bit.  In fact, it has been hard to find more than 20 anglers on the water at a given time on Flat Creek over this past week.  You still have to work for your 20-plus in cutthroats, but it might be a bit easier than over the past month and a half.
Effective dry flies – Parachute Extended Body PMDs and Mahogany Duns, Booty’s PMD and Mahogany Emerger, Comparaduns, Rusty Spinners, Air-Flo Tricos, Parachute Tricos, Quigley Cripples, Pheasant Tail Emergers, Film Critics, Elk Hair Caddis, and X-Caddis.
Effective nymphs – Pheasant Tail Nymphs, Prince Nymphs, Soft Hackles, Batmen, Bubbleback Pheasant Tails, Rainbow Warriors, Booty’s Deep Stinker Nymphs, Hickey’s Auto Nymph, and Copper Johns in red, olive, or black.

Salt River
This is the time of the year to return to the Salt River with its autumn colors, fall emergences, and hungry cutthroats and brown trout. The Salt is fishing well on all reaches with imitations of the prevalent hatches, which includes, PMDs, mahogany duns, caddis, BWOs, and tricos.  At the same time, attractors are producing in a variety of waters, including banks and structures, seams, and riffles.  Mayfly and caddis imitations are producing in the same waters, but are also hammering it home in eddies riffle tailouts.
Effective dry flies – Circus Peanuts, Stimulators, Will’s Winged Chernobyls, Parachute Adams, Parachute Extended Body PMDs, Mahogany Duns, and BWOs, Booty’s PMD, BWO, and Mahogany Dun Emergers, Film Critics, Pheasant Tail Emergers, Q’s Loop Wing Cripple, Snowshoe Duns, Parachute Tricos, X-Caddis, and Elk Hair Caddis.
Effective nymphs – Bubbleback Pheasant Tail Nymphs, Zug Bugs, Psycho Mays, Bruised Mays, Robins, Soft Hackles, and Booty’s Deep Stinker Nymphs.