Topaz Lake is an outdoor paradise for camping, fishing, boating, water skiing and off-roading. Topaz is located on the very northern tip of Mono County, bordered by Douglas County in the State of Nevada. Topaz lake is fed by the famous West Walker River, well known for its great fishing from the last Saturday of April through the last day of September. Topaz is also popular with boaters and water skiers. You can find picnic grounds, camping, boat launch facilities on the north east shore of the lake and also amenities and gaming at the nearby Topaz Lodge Casino.