This is the 2017-18 Twin Rivers Senior Hockey League season. This is the league's second season.
- The Vonda Chiefs who were removed from the league during the 2016-17 season do not return.
- The league added the Aberdeen Knights, Hague Royals, and the Waldheim Warriors.
note: Aberdeen forfeited a January 27 game to Birch Hills and then a January 28 game was cancelled. On January 30th the Aberdeen Knights announced that Craig Hartl, a goaltender on the team passed away over the January 27-28 weekend.
- Rosthern Wheat Kings defeated Waldheim Warriors 3 games to none
- Birch Hills Blackhawks defeated Clavet Cougars 3 games to none
- St. Louis Blues defeated Warman Wildcats 3 games to 1
- Hague Royals defeated Dalmeny Sabres 3 games to 2
- Rosthern Wheat Kings defeated Hague Royals 3 games to none
- Birch Hills Blackhawks defeated St. Louis Blues 3 games to 1