1. Group D: Hector Hernandez Victor Liberato Roman Rios Tania Ramirez Luis Elias

2. History Teddy Roosevelt signed the law in 1902 to start a dam and an artificial lakes in the western part of the US to stop run off and the waste of water in the winter season. Teddy Roosevelt signed the law in 1902 to start a dam and an artificial lakes in the western part of the US to stop run off and the waste of water in the winter season. A dam is a barrier that impounds water or underground streams. A dam is a barrier that impounds water or underground streams.

3. History Reclamation began to build a dam after many farmers promised to pay for the stop of flooding and the availability to use water in a more safe and rapid way. The reclamation started to build what is now known as Hoover Dam. Reclamation began to build a dam after many farmers promised to pay for the stop of flooding and the availability to use water in a more safe and rapid way. The reclamation started to build what is now known as Hoover Dam. Reclamation means non polluting electric power from great hydro plants Reclamation means non polluting electric power from great hydro plants

4. Hoover Dam from the air Official nameHoover Dam ImpoundsColorado River CreatesLake Mead LocaleNevada-Arizona United States Maintained byU.S. Bureau of Reclamation Length1244 ft (379 m) Height726.4 ft (221 m) Construction began1931 Opening date1936

5. Hoover Dam U.S. National Historic Landmark Hoover Dam by Ansel Adams Nearest city:Boulder City, Nevada Architect:Six Companies,Inc. (structural), Gordon Kaufmann (exteriors) Architectural style(s):Art Deco Designated as NHL:August 20, 1985 Added to NRHP:April 08, 1981 NRHP Reference #:81000382 Governing body:BUREAU OF RECLAMATION

6. HOOVER DAM Originally known as Boulder Dam. Originally known as Boulder Dam. The world's largest electric-power generating station. The world's largest electric-power generating station. The world's largest concrete structure. The world's largest concrete structure. Grand Coulee Dam in 1945. Grand Coulee Dam in 1945. Hoover Dam is currently the world's 35th- largest hydroelectric generating station. Hoover Dam is currently the world's 35th- largest hydroelectric generating station. Named after Herbert Hoover. Named after Herbert Hoover.

7. HOOVER DAM In January 1922, Hoover met with the state governors. In January 1922, Hoover met with the state governors. Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming. Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming. Colorado River Compact was signed on November 24, 1922. Colorado River Compact was signed on November 24, 1922. Split the river basin into upper and lower halves. Split the river basin into upper and lower halves. Provide irrigation water flow, for flood control, and for hydroelectric-power generation Provide irrigation water flow, for flood control, and for hydroelectric-power generation

8. POWER DISTRIBUTION AreaPercentage Metropolitan Water District of Southern California28.5393% State of Nevada23.3706% State of Arizona18.9527% Los Angeles, California15.4229% Southern California Edison Company5.5377% Boulder City, Nevada1.7672% Glendale, California1.5874% Pasadena, California1.3629% Anaheim, California1.1487% Riverside, California0.8615% Vernon, California0.6185% Burbank, California0.5876% Azusa, California0.1104% Colton, California0.0884% Banning, California0.0442%

9. CONSTRUCTION FACTS Capable of generating 2 million kilowatts sufficient for 1.7 million homes. Capable of generating 2 million kilowatts sufficient for 1.7 million homes. Has 17 generators. Has 17 generators. Two cofferdams were constructed. Two cofferdams were constructed. Four diversion tunnels were driven through the canyon walls. Four diversion tunnels were driven through the canyon walls. There were 112 deaths associated with the construction of the dam. There were 112 deaths associated with the construction of the dam.

10. POURING CONCRETE 6 million tons of concrete where used. 6 million tons of concrete where used. Uneven cooling and contraction of the concrete. Uneven cooling and contraction of the concrete. 125 years would have taken to cool to ambient temperature. 125 years would have taken to cool to ambient temperature. To further cool the concrete each form contained cooling coils of 1 inch thin- walled steel pipe. To further cool the concrete each form contained cooling coils of 1 inch thin- walled steel pipe.

11. Sources Discovery Channel Bureau of Reclamation United States Department of the Interior.- The Miracle of Water. John Wesley Powell Memorial Museum. http://www.powellmuseum.org/MajorPowell. html Thank you.