Fishing in Koosharem, Utah

Fish Lake is the place to target mackinaw (lake trout), and it also holds rainbow trout and splake. Koosharem Reservoir and Rex Reservoir are stocked with rainbow trout. Check the Utah Division of Wildlife Resources stocking reports before your trip for current conditions at the smaller reservoirs.

Most of these waters are fishable from shore. The Koosharem Day Use site is specifically listed with shoreline access, and dispersed sites like Cold Springs give you bank access without a developed launch. Fish Lake has boat ramp infrastructure if you want to troll for mackinaw, which is the most effective method for that species.

Late spring through early fall is the primary window, with ice-out timing varying by year at the higher reservoirs. Summer mornings and evenings are most productive once surface temperatures rise. Ice fishing is possible in winter on Koosharem Reservoir and Fish Lake, but confirm ice thickness and access road conditions before making the trip.

A medium-light spinning setup with 4-8 lb monofilament or fluorocarbon covers most situations at the smaller reservoirs. For mackinaw at Fish Lake, heavier trolling gear or a jigging setup with larger spoons is more appropriate. Bring layers regardless of the forecast — at 7,000-plus feet, afternoon weather can change fast.

Yes. The Koosharem Day Use site and Koosharem Reservoir both offer easy shoreline access without technical terrain. Stocked rainbow trout at the local reservoirs are more forgiving for newer anglers than chasing mackinaw at Fish Lake. A Utah fishing license is required for anyone 12 and older, and you can purchase one online through the Utah DWR before you arrive.