Grayrocks Reservoir is a popular fishing spot in Wyoming that is known for its abundance of trout, including rainbow trout, brown trout, and cutthroat trout. Visitors can also enjoy activities such as boating, camping, and hiking in the nearby Medicine Bow National Forest. Fishing tips include using lures such as spinners, jigs, and streamers, and focusing on areas where the water is deeper and cooler. The best time to visit is in the summer months when the average temperature ranges from 70-80°F.