| Facilities: Lake Thomas Campground provides restrooms, water, and a boat launch. Best Time To Visit: Lake Thomas Campground is open May through September. Fees: A camping fee is charged. Accessibility: This campground is not handicap accessible. Rules: The maximum stay is 14 days. Directions: To reach Lake Thomas Campground from Colville, start out going northeast on WA-20 toward North Oak Street, and continue on WA-20 for 35.9 miles. Turn left onto WA-31 for 4.0 miles. From Ione, go south on state route 31 for 3 miles to state route 20. Go southwest on 20 approximately 10 miles to Lake Gillette Campground. From Lake Gillette Campground go east 34 miles. Map: Click here for a map to Lake Thomas Campground Reservations: Reservations are not accepted for Lake Thomas Campground. | 
