Friends of Rough River Lake, Inc. will be hosting the 2021 Rough River Lake Dam Triathlon on August 14th, so mark your calendars!!! Registration starts at 7:00 AM CDT and events begin at 8:00 AM CDT at Rough River Dam State Resort Park Beach. Pre-registration is due by July 26th, 2021. All those pre-registered will receive a Dam Triathlon t-shirt. We look forward to seeing you there!