Archive: https://archive.today/lBHTS From the post: "On Monday, Nov. 27, the Bureau of Reclamation started the process of draining water from the Colorado-Big Thompson Project (C-BT) tunnels and reservoirs in preparation for safety inspections and maintenance work. The temporary drawdown reduced levels in Lake Estes from its typical level of 7,472 feet in elevation. The reduced levels also affect Marys Lake. “Every five years, an upper C-BT water conveyance inspection must be completed,” said Ronnie Rogers, Power Plant Supervisor for the Estes Park and Marys Lake power plants. “Engineers come down from Montana and Denver to evaluate and inspect concrete every five years. They check to make sure the condition of the pipes is up to standard.”"