Question: What dam was dedicated in 1935 and is upstream from the deepest dam in the world?
Context: The Diama Dam, sometimes referred to as the Maka–Diama Dam, is a gravity dam on the Senegal River, spanning the border of Senegal and Mauritania.  It is located next to the town of Diama, Senegal and about 22 km north of Saint-Louis, Senegal.  The purpose of the dam is to prevent saltwater intrusion upstream, supply water for the irrigation of about 45000 ha of crops and create a road crossing for the road between St. Louis and Nouakchott in Mauritania.  Additionally, a ship lock built within the dam provides for navigation upstream.  Plans for the dam were first drawn in 1970 when the riparian states within the Senegal River Basin Development Authority agreed to develop the Senegal River.  The Diama Dam was to be constructed in conjunction with the Manantali Dam which was to be located further upstream in Mali.  Construction on the Diama Dam began on 15 September 1981 and was completed on 12 August 1986.  The Manantali Dam was completed in 1988.  The Diama project was funded by a US$149.5 million loan from the African Development Bank.  The main section of the dam with ship lock and spillway is 170 m long while a 440 m long embankment dam section extends north to the edge of the river.  A dike further extends the dam to the north.  The dam is 18 m tall and it is spillway has a maximum discharge of 6500 m3/s . Nickajack Dam is a hydroelectric dam in Marion County in the U.S. state of Tennessee.  It is one of nine dams on the Tennessee River owned and operated by the Tennessee Valley Authority, which built the dam in the mid-1960s to replace the outdated Hales Bar Dam 6 mi upstream.  The dam impounds the 10370 acre Nickajack Lake and feeds into Guntersville Lake.  Nickajack Dam is named for a Cherokee village once located just upstream from the dam (the site is now submerged).  The village was the namesake for Nickajack Cave, which was partially flooded by the reservoir. Mica Dam, a hydroelectric dam spanning the Columbia River 135 kilometres north of Revelstoke, British Columbia, Canada, was built as one of three Canadian projects under the terms of the 1964 Columbia River Treaty and is operated by BC Hydro.  Completed in 1973 under the terms of the treaty, the Mica powerhouse had an original generating capacity of 1,805 megawatts (MW).  Mica Dam, named after the nearby settlement of Mica Creek and its associated stream, in turn named after the abundance of mica minerals in the area, is one of the largest earthfill dams in the world.  The reservoir for the dam is Kinbasket Lake, which was created when the dam was built.  Water from the dam flows south directly into Revelstoke Lake, the reservoir for the Revelstoke Dam.  Mica Dam is the tallest dam in Canada and second tallest in North America after the Chicoasén Dam in Mexico and it is the farthest upstream dam on the Columbia River.  The dam's underground powerhouse was the second largest in the world at the time of its construction, and was the first 500 kV installation of sulphur hexafluoride (SF) insulated switchgear in the world. An arch-gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam.  It is a dam that curves upstream in a narrowing curve that directs most of the water against the canyon rock walls, providing the force to compress the dam.  It combines the strengths of two common dam forms and is considered a compromise between the two.  They are made of conventional concrete, Roller Compacted Concrete (RCC), or masonry.  Arch-gravity dams are not reinforced except at the spillway.  A typical example of the conventional concrete dam is the Hoover Dam.  Changuinola Dam is an example of the RCC arch-gravity dam.  A gravity dam requires a large volume of internal fill.  An arch-gravity dam can be thinner than the pure gravity dam and requires less internal fill. The Suofengying Dam is a concrete gravity dam on the Wu River, 44 km northwest of Guiyang in Guizhou Province, China.  It is located 35.5 km downstream of the Dongfeng Dam and 74.9 km upstream of the Wujiangdu Dam.  The primary purpose of the dam is hydroelectric power generation and it supports a 600 MW power station.  Construction on the dam began on 26 July 2002 and on December 18 of that year, the river was diverted.  Pouring of roller-compacted concrete into the dam's body began on 14 January 2004 and in June, the dam began to impound its reservoir.  On 18 August, the first generator was operational and the last two in 2005.  The 121.8 m tall dam creates a reservoir with a capacity of 201200000 m3 .  The dam's power station is located on its right bank and contains three 200 MW Francis turbine-generators. The Baath Dam (Arabic: سد البعث‎ , 'Dam of the Renaissance' ‎ , Kurdish: Bendava Baas‎ , Syriac: ܣܟܪܐ ܕܒܥܬ‎ , "Sekro d'Ba'ath " ) is a dam on the Euphrates, located 22 km upstream from the city of Raqqa in Raqqa Governorate, Syria.  Construction of the dam started in 1983 and was finished in 1986.  It is intended to generate hydroelectric power as well as regulate the irregular flow from the Tabqa Dam, which is located 18 km upstream from the Baath Dam.  These irregularities in the flow from the Tabqa Dam are caused by changes in the electricity demand.  The Baath Dam is 14 m high and the installed water turbines can generate 81 MW.  The storage capacity of the Baath Dam Reservoir is 0.09 km3 . Hoover Dam, originally known as Boulder Dam from 1933 to 1947, when it was officially renamed Hoover Dam by a joint resolution of Congress, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona.  It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt.  Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives.  The dam was named after President Herbert Hoover. The Tabqa Dam (Arabic: سد الطبقة‎ ‎ , "Sadd al-Ṭabqa"; Kurdish: Bendava Tebqa‎ ; Syriac: ܣܟܪܐ ܕܛܒܩܗ‎ , "Sekro d'Tabqa " ), or al-Thawra Dam as it is also named (Arabic: سد الثورة‎ ‎ , "Sadd al-thawra", literally "Dam of the Revolution"), most commonly known as Euphrates Dam (Arabic: سد الفرات‎ ‎ , "Sadd al-Furāt"; Kurdish: Bendava Firatê‎ ; Syriac: ܣܟܪܐ ܕܦܪܬ‎ , "Sekro d'Frot " ), is an earthen dam on the Euphrates, located 40 km upstream from the city of Raqqa in Raqqa Governorate, Syria.  The city of Al-Thawrah is located immediately south of the dam.  The dam is 60 m high and 4.5 km long and is the largest dam in Syria.  Its construction led to the creation of Lake Assad, Syria's largest water reservoir.  The dam was constructed between 1968 and 1973 with help from the Soviet Union.  At the same time, an international effort was made to excavate and document as many archaeological remains as possible in the area of the future lake before they would be flooded by the rising water.  When the flow of the Euphrates was reduced in 1974 to fill the lake behind the dam, a dispute broke out between Syria and Iraq that was settled by intervention from Saudi Arabia and the Soviet Union.  The dam was originally built to generate hydroelectric power, as well as irrigate lands on both sides of the Euphrates.  The dam has not reached its full potential in either of these objectives. Parker Dam is a concrete arch-gravity dam that crosses the Colorado River 155 mi downstream of Hoover Dam.  Built between 1934 and 1938 by the Bureau of Reclamation, it is 320 ft high, 235 ft of which are below the riverbed, making it the deepest dam in the world.  The dam's primary functions are to create a reservoir, and to generate hydroelectric power.  The reservoir behind the dam is called Lake Havasu and can store 647000 acre.ft or over 210 billion US gallons.  The dam straddles the state border at the narrows the river passes through between the Whipple Mountains of California and the Buckskin Mountains of Arizona. The Tokwe Mukorsi Dam is a concrete-face rock-fill dam on the Tokwe River, just downstream of its confluence with the Mukorsi River, about 72 km south of Masvingo in Masvingo Province, Zimbabwe.  Construction on the dam began in June 1998 but stalled in 2008.  Salini Impregilo began to finish the dam in 2011.  Heavy flooding in February 2014 caused a partial failure on 4 February, on the downstream face of the dam.  By late February the dam had not been fully breached but the unplanned rising reservoir behind the dam caused evacuations upstream.  Both upstream and downstream, over 20,000 people were evacuated.  Construction of the dam was suspended in June 2014 due to a lack of funding.  The power station was expected to be commissioned by the end of 2015.  It is 90.3 m tall and creates a 1750000000 m3 reservoir, the largest the in country.  The associated hydroelectric power station will have a 12 MW installed capacity.
Answer: Hoover Dam