Horseshoe Reservoir Lathrop SP is a popular fishing destination in Colorado with a variety of fish species, including rainbow trout, brown trout, and kokanee salmon. Nearby activities include hiking, camping, and boating. Fishing tips include using lures and flies that mimic natural prey, such as worms and insects. The best time to visit is during the summer months when the temperatures average in the high 70s to low 80s. In the fall, temperatures drop to the 50s, and fishing can still be good for trout.