Complex sentence: Currently, the ORC hosts three regattas during the rowing season, the first one is the National Capital High School Regatta which takes place each year at the end of May/beginning of June on the Ottawa River.
Split into simpler sentences: Currently, the ORC hosts three regattas during the rowing season. The first one is the National Capital High School Regatta which takes place each year at the end of May/beginning of June on the Ottawa River.