August 6, 1929 Construction Began
September 5, 1929 Clearing for Reservoir Started
September 30, 1929 Layout of Cofferdam (Spillway and West Abutment)
October 3, 1929 Excavation for East Abutment Started
October 11, 1929 Excavation for West Abutment Started
November 21, 1929 First Steel Setting on Osage Bridge
December 21, 1929 Temporary Power House Tested
April 9, 1930 First Concrete Poured
July 22, 1930 Diversion Channel Opened
August 5, 1930 Upstream Side of Cofferdam Closed
December 10, 1930 Power House Steel Structure Erection Started
January 31, 1931 Highway Slab Completed
February 2, 1931 Lake Began to Fill
May 20, 1931 Lake Reached Spillway Crest Elevation
May 30, 1931 Lake Traffic Began
August 6, 1931 Generator Tests Started
September 3, 1931 Water Wheel Tests Started
October 16, 1931 First Commercial Operation of Osage Plant
December 24, 1931 Lake Area Electric Service Began |
