In 1925, Congress authorized a U.S. Army Corps of Engineers study of the Columbia River. This study was included in the Rivers and Harbors Act of , which provided for studies on the navigation, power, flood control and irrigation potential of rivers. In , the Army Corps responded with the first of the "308 Reports" named after the 1925 House Document No. 308 (69th Congress, 1st Session). With the help of Washington's Senators, Wesley Jones and Clarence Dill, Congress ordered $600,000 in further studies to be carried out by the Army Corps and Federal Power Commission on the Columbia River Basin and Snake Rivers. U.S. Army Major John Butler was responsible for the upper Columbia River and Snake River and in 1932, his 1,000-page report was submitted to Congress. It recommended the Grand Coulee Dam and nine others on the river, including some in Canada. The report stated electricity sales from the Grand Coulee Dam could pay for construction costs. Reclamation—whose interest in the dam was revitalized by the report—endorsed it.