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That Eastern Idaho is unrivaled in its hunting experiences enjoying hunting seasons for deer, elk, antelope, black bear, mountain lion, quail, pheasant and other species. Learn More

Three Rivers Ranch

1662 Highway 47
Ashton, Idaho 83420
Official Website
Lodging Type
Guest Ranch
Outfitter Type



The Lodge is open from May 19 to November 1. However, Fly-Fishing Day trips are offered year round.


Our All-Inclusive Fly-Fishing Packages includes all meals, cocktails, lodging, guided days and complimentary shuttle from local airports to and from the ranch. Air transportation, gratuities, and taxes are not included. We do offer complimentary fly-fishing instruction upon arrival when requested. We can also accommodate non-anglers in your party and are happy to help plan sightseeing excursions or activities should they choose.


All told we are licensed to guide fly-fishing guests on more than 16 legendary trout streams including the Henry's Fork of the Snake, South Fork of the Snake, Teton River, Gallatin, Bechler, Warm River, Robinson Creek, Yellowstone, Firehole, Henry's Lake, Hebgen Lake, and many more tributaries of the Henry's Fork Drainage. The options are endless. Your guide will coordinate your weekly schedule so that you can cover the most productive stretches where prolific hatches tease trout to the surface and the conditions are best.

The Henry's Fork of the Snake
We are blessed to be near one of the most famous trout streams in all of the United States. The Henry's Fork encompasses 1.7 million acres and over 3,000 miles of rivers, streams and canals in eastern Idaho and western Wyoming. Here, you will find some of the finest fishing in the entire United States. The Henry's Fork is a tremendous dry-fly fishery loaded with many species of trout, large wild rainbows, and the ever elusive brown. The river flows through gentle flowing ranch land, timber covered canyons, and spring creek like sections, with tributaries that are spectacular fisheries in their own right.

The South Fork of the Snake
Few rivers in America can provide a fly-fishing experience like that of The South Fork of the Snake River. We fish roughly 62 miles of the South Fork, from the Palisades Reservoir to the confluence of the Henry's Fork near Menan. Below Palisades Dam begins the stretch of the river, referred to as the "South Fork". The South Fork of the Snake boasts 5,177 fish per mile, which makes it one of the most productive Blue Ribbon Rivers in the country.

The Teton River
The Teton River is an 81.5 mile-long tributary of the Henry's Fork of the Snake River. It drains through the Teton Valley along the western side of the Idaho-Wyoming border. Its location along the Teton Mountain Range (near Jackson Hole, WY) provides the river with more rainfall than many other rivers in the region.

The Teton River provides some of the best fly fishing for both the beginner and the advanced angler. The fish consist of rainbow, cutthroat, hybrid cutt-bows, and brook trout; which grow quite large in the Teton River due to the prolific hatches occurring throughout the spring and into the fall.

Because of the many springs that feed into the Teton, the river maintains a near constant temperature in the upper stretch. This makes ideal conditions for great hatches. When the water temperature does not vary much, the mayflies, caddis and stoneflies can continually reproduce, resulting in big fat fish and happy anglers.


Winter: November - March
Our water year greatly depends on the snowfall in the high country. In 2010 Warm River & Island Park had roughly 17.85 feet or 214" of snowfall & in Ashton there was 6.75 feet of snowfall.

Spring: April - June
Snow will slowly start melting in the lower valleys in March and April, but snow regularly falls in the high country. Fishing can be incredible before the major runoff; this is typically in April and May. By late May in a typical snow year, the majority of the snow has melted and the rivers are full. By June, the weather is perfect, the rivers are fishing, and life is beautiful.

Summer: July - August
Summers can be relatively short, but very beautiful and mild. Temperatures can reach 100 degrees; however, the average temperature is in the high 80's. Fishing is typically great in every river, lake, and spring creek around the area. Those of you that enjoy hiking, camping, and fishing in Yellowstone National Park, Teton National Park, and in the high backcountry will enjoy the weather and the lack of snow above 9000 feet.

Fall: September - October
Autumn in Idaho is breathtaking. The trees are colorful, the water is low, and the fishing is excellent. Fall brings the time of year we like to call "Indian summer". The nights are cold and you can have some mornings with frost, but the days are warm bringing temperatures above 70 degrees. In any Rocky Mountain fall weather, the need to dress in layers is very important and makes life a little more comfortable.

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