Otter Tail Lake is a tournament-ready slalom ski lake tucked into the southwest corner of Gallatin county at the base of the Tobacco Root mountains. The Jefferson river flows nearby & the panoramic Bridger mountains shimmer in the distance. The lake is eight miles south of Three Forks on Jefferson River Rd. There is a boat house with full observation deck elevated off the lake for viewing. The Lake was built by Matt and Carolyn Nistler during the winter of 08-09. Matt and Carolyn Nistler live on site, all use of the facility is granted through their willingness to promote waterskiing as a sport.