Image description

Welcome to Boulder Mountain Fly Fishing, the definitive guide to Boulder Mountain


Boulder Mountain Fly Fishing provides guided fly fishing trips to the many lakes and streams of southern Utah's Boulder Mountain and the surrounding area. Boulder Mountain is a vast, densely forested plateau with fantastic views of Capitol Reef National Park to the east and Grand Staircase Escalante National Monument / Escalante River Canyons to the south.

Arguably the best fly fishing in southern Utah, Boulder Mountain is even regarded by many anglers as the last great place for fly fishing adventure in the western United States. If you are looking for a guided fly fishing trip to southern Utah, this is the place that most fly fishers can only dream about, with outstanding cutthroat trout and big brook trout. Guided fly fishing on Boulder Mountain is what we have been doing for nearly three decades. No other local outfitter knows the lakes and streams of Boulder Mountain as well. Check out the huge rainbow in the image below. This beautiful wild rainbow was caught and released on private waters here in the town of Boulder Utah on March 29, 2012.

a photo of an ATH Traun F1 and a fine wild brown

The first opportunity for a guided fly fishing trip on Boulder Mountain is in April. Much of the Boulder Mountain is still covered with snow, and the huge brookies of the high elevation remote lakes are still under the ice in early April. But near the town of Boulder, at a much lower elevation than the Boulder Mountain, the ice is gone by the first week of March. The opportunity to cast to trophy wild rainbow and brown trout on private waters is a welcome change from winter. There are also very fine small streams, some with private access that are sometimes fishable as early as the first week of March. April through May is a perfect time for fly fishing on one of several local small streams. The trout in these streams are all wild browns and rainbows.

a photo of a Boulder Mountain stream

The image above is a scene from one of several small streams on the Boulder Mountain. The trout in these streams are all wild, there are no stocked fish. This stream is perfect for dry and nymph fishing with light 2-4 wt. rods. This fine wild trout stream is fishable from the first part of April until the middle of November. Runoff on this stream is for just a week or so, usually occurring from June 1-10.

Image description

The fine wild brown in the image above was hooked and landed using a two weight rod and a size 14 BH Prince nymph on March 29, 2012. Late May through June is also prime time to fly fish for native cutthroat and tiger trout in the lakes of Boulder Mountain. Later in the summer and into fall, from July all the way through October big brookies and splake are biting. These fantastic fish are found in many of the lakes and beaver ponds on Boulder Mountain...for those who know where to look. If you would enjoy an opportunity to catch huge splake or extremely large brookies like these, don't wait any longer. Prime time for large splake, tigers and brookies is early summer through fall.


All of the wild trout that you will view on this website were caught and released in the area around the town of Boulder and on nearby Boulder Mountain and the Aquarius Plateau. The brook trout shown on this website are fish that were caught and released from local lakes and beaver ponds. These are without a doubt some of the largest wild brook trout found anywhere on public land in the United States. They are also perfect examples of what you can expect to catch with a fly rod over the course of a day of guided fly fishing on Boulder Mountain. There are brook trout on the Boulder Mountain that will surpass the current state record of seven and one half pounds. It is just a matter of time before one comes to the net!

a photo of guide Steve Stoner with a huge splake

Brook trout are not the biggest fish found here. Tiger trout and splake grow much larger, like the fish in the image above. This beautiful male splake in bright spawning colors weighed in at eleven and one half pounds. Make that call soon before this unique opportunity passes you by.


Boulder is on Scenic Byway 12 midway between Escalante [28 miles] and Torrey [35 miles].This beautiful paved highway runs from the junction with Highway 89 near Bryce Canyon National Park to the junction with Highway 24 near Capitol Reef National Park. If you are planning to visit either of these national parks you may be driving through the town of Boulder.  A variety of lodging and dining accommodations are available in the area.