It offers opportunities to catch fish species such as rainbow trout, brook trout, and brown trout. Nearby activities include hiking, camping, and picnicking. Fishing tips include using lures such as spoons and spinners and fishing during the morning and evening. The best time of year to visit is from May to October with average temperatures ranging from 60-80 degrees Fahrenheit. With its scenic views and great fishing, Lake Irwin is a must-visit destination for fishing enthusiasts.