TULSA, Okla. - In an effort to keep Lake Eufaula stakeholders up to date on lake conditions, the Tulsa District, U.S. Army Corps of Engineers, provides the following information:Southwestern Power Administration (SWPA) estimates weekly generation for January 16-22, 2011 at 2,500 Mega Watt hours (5-6 hours per day with all three hydropower units)