Boulder Mountain is routinely held in high regard by Utahns as a fisherman's paradise. Fishing opportunities began on the mountain in the 1950s when
juvenile fish(fry) were carried via horseback and planted in the area's high alpine lakes and streams. While the state often will now use aircraft to stock some of these high alpine lakes, the practice of stocking fish carried in by horseback continues for more delicate fingerling fish, like kokanee salmon. In 1971, the state record brook trout (7 pounds, 8 ounces) was caught in Boulder Mountain's waters.
Brook trout are the prominent species stocked on Boulder Mountain. Colorado River Cutthroat are the fish species native to the area. In 2014, a committee consisting of anglers and residents convened to determine the future management of the fisheries on Boulder Mountain. This committee assisted the Utah Division of Wildlife Resources in resolving the issue of overpopulating brook trout in the alpine lakes of Boulder Mountain. Based on the discussion, 35 percent of the lakes would be managed for trophy brook trout. The management plan categorized each lake into ten different sections: North Creek, North Slope, South Slope, East Slope, West Slope, Boulder Top, Griffin Top, and Escalante Mountain. The management plan introduces splake, tiger, and cutthroat trout to the waters that the committee deemed appropriate. Colorado cutthroat populations have steadily decreased since the introduction of brook trout to the area. Emphasizing the importance of re-establishing a healthy population of native trout in the area, sterile brook trout (triploid) and other sterile trout species, such as tiger and splake trout, were introduced to increase fishing opportunities. In 2022, state biologists first stocked
kokanee salmon in Boulder Mountain, in
Blind Lake. Biologists hope that the kokanee population there will give anglers the opportunity to target these fish from shore, which is generally difficult to do for kokanee salmon. The other goal of the kokanee is to provide an additional food source for the splake, brook, and cutthroat trout populations. == Flora ==