Seven Clans Casino /Hotel/Indoor Water Park Center St. Seven Clans Casino, Hotel and. Casual casino hotel offering relaxed rooms, plus an indoor water park & 2 dining options. Seven. Lots. Pros: wonderful water park! Loved the lazy river, water slides (only one smaller one was closed), lots of tables, nice splash pad areas for small kids. The Seven Clans Casino Thief River Falls location boasts a 40, square foot water park with four large water slides, three mini-slides, two hot tubs, a lazy. Seven Clans Casino Hotel & Indoor Water Park · Map · Center St E Thief River Falls, MN Directions · () Call Now · Known For. Thief River Falls MN Phone: Visit their website. SEVEN CLANS CASINO THIEF RIVER FALLS. The casino floor boasts over gaming machines (video slots, poker and keno) and four live blackjack tables so you get Las Vegas action and Northern Minnesota. #5 of 7 things to do in Thief River FallsCasinos (MN)Thief River FallsThings to Do in Thief River FallsSeven Clans Casino Thief River Falls. INDOOR WATER PARK! The Seven Clans Casino Thief River Falls location boasts a 40, square foot water park with four large water slides, three mini-slides. Water Park - Thief River Falls · Page · Casino · () · [HOST] · Rating · (1, Reviews). . Center Street East Thief River Falls, MN Casino • Sports • Live Dealer • Poker #1 Choice of. E. Accepts. Yes.