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<br />chronology of colorado. river
<br />
<br />() '751
<br />
<br />~--------------------------~----------------~-~~-~~~.
<br />
<br />1540
<br />1542
<br />1776
<br />1857
<br />1869
<br />
<br />Alarcon discovers and explores the lower Colorado River.
<br />Cardenas discovers the Grand Canyon.
<br />Escalante .explores the upper Colorado River and its tributaries.
<br />Lt.]. C. Ives navigates the river from its mouth to Vegas Wash.
<br />Maj. John Wesley Powell makes the first trip through the Grand
<br />Canyon.
<br />President Theodore Roosevelt signs the Reclamation Act.
<br />Reclamation engineers make investigations and reports on control and
<br />utilization of the Colorado.
<br />Arthur P. Davis, Reclamation Director and Chief Engineer, conceives
<br />control of the Colorado by a dam of unprecedented height in Boulder
<br />Canyon.
<br />The seven Southwestern States initial the Colorado River Compact,
<br />Santa Fe, N. Mex., November 24.
<br />Bureau of Reclamation recommends construction of the Boulder
<br />Canyon project in its report on Colorado River.
<br />The Colorado River Board reports favorably on feasibility of project.
<br />The Boulder Canyon Project Act, introduced by Senator Johnson and
<br />Representative Swing, passes the Senate on December 14, the House
<br />December 18, and is signed by the President on December 21.
<br />The Boulder Canyon Project Act declared effective June 25.
<br />Contracts completed for sale of all electric energy from the project.
<br />Breaking ground on Government railroad September 17 inaugurates
<br />construction of the Boulder Canyon project.
<br />Bureau of Reclamation opens bids for construction of Hoover Dam
<br />and powerhouse March 4 and awards contract to Six Companies, Inc.,
<br />which starts work March II.
<br />The engineers divert the river, November 14.
<br />First concrete placed in dam June 6.
<br />The dam starts to impound water in Lake Mead, February I.
<br />Last concrete placed in dam, May 29.
<br />President Franklin D. Roosevelt dedicates the dam, September 30.
<br />First generator goes into full operation, October 22.
<br />Second generator goes into operation, November 14.
<br />Third generator goes into operation, December 28.
<br />Two more generators go into operation, March 18 and August 16.
<br />Storage reaches 24,000,000 acre-feet, and Lake Mead stretches 115
<br />. miles upstream.
<br />
<br />1947
<br />
<br />1902
<br />1902-
<br />1918
<br />1918
<br />
<br />1922
<br />
<br />1924
<br />
<br />1928
<br />
<br />1929
<br />1930
<br />
<br />1931
<br />
<br />1932
<br />1933
<br />1935
<br />
<br />1936
<br />
<br />1937
<br />1938
<br />
<br />VI
<br />
<br />1939
<br />
<br />Two more generators go into operation, June 26 and August 31;
<br />total,7.
<br />Storage reaches 25,000,000 acre-feet, more than 8,000 billion gallons.
<br />Two more generators, June 19 and September 12; total, 9. Installed
<br />capacity reaches 704,800 kilowatts, making the hydroelectric power
<br />plant the largest in the world.
<br />Three more generators ordered. Generation for the year, 3 billion
<br />kilowatt-hours.
<br />All.American Canal placed in operation..
<br />Metropolitan Water District's Colorado River aqueduct successfully
<br />tested.
<br />Lake Mead elevation at an all-time high of 1,220.45 feet above sea
<br />level July 30; 580 feet deep, 120 miles long.
<br />Storage reaches 31,000,000 acre-feet, or 10,000 billion gallons.
<br />Spillways are tested for the nrst time, August 6.
<br />Another generator placed in operation, October 9.
<br />Dam closed to the public 5: 30 p. m., December 7, and traffic moved
<br />over the dam, under convoy, for the duration of hostilities.
<br />Colorado River aqueduct in operation.
<br />Reduced amortization rates effective.
<br />One more generator is placed in operation, July II.
<br />Another generator placed in operation, January 13.
<br />During operating year 1943-44 a total of 6,251,000,000 kilowatt-
<br />hours of energy generated. An all.time high for the plant.
<br />Another generator placed in operation, November 1 j total, 13. Plant
<br />capacity, 1,034,800 kilowatts; the largest power plant in the world.
<br />Dam reopened to public, September 2.
<br />Decennial of commercial power production observed with Secretary
<br />Krug, Commissioner StrB:US, and dignitaries of the Seven Basin States
<br />participating at ceremonies held at Hoover Dam.
<br />City of San Diego receives first Colorado River water through its
<br />aqueduct which connects with Metropolitan Water District's aqueduct
<br />at the San Jacinto Tunnel, November 26.
<br />All visitors' records broken with 424,175 persons conducted through
<br />Hoover Dam and Power Plant via guide service facilities; more than a
<br />million persons visited the area.
<br />Public Law 43 passed by 80th Congress designated Hoover Dam as
<br />the official name for the structure known since 1932 as Boulder Dam.
<br />
<br />1940
<br />
<br />1941
<br />
<br />1942
<br />1943
<br />1944
<br />
<br />1945
<br />1946
<br />
<br />VII
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