Question: What company owns a hydroelectric, concrete gravity dam; located on the Columbia River, between the Yakima Firing Range and a mostly decommissioned nuclear production complex operated by the United States federal government on the Columbia River in the U.S. state of Washington?
Context: Priest Rapids Dam is a hydroelectric, concrete gravity dam; located on the Columbia River, between the Yakima Firing Range and the Hanford Nuclear Reservation, and bridges Yakima County and Grant County, in the U.S. state of Washington.  The dam is 24 miles south of the town of Vantage, and 47 miles northwest of the city of Richland.  It is located at mile marker 397.1 from the mouth of the Columbia.  It is owned by the Grant County Public Utility District.  Priest Rapids, for which the dam was named, are now submerged beneath the dam's reservoir. The John Day Dam is a concrete gravity run-of-the-river dam spanning the Columbia River in the northwestern United States.  The dam features a navigation lock plus fish ladders on both sides.  The John Day Lock has the highest lift (110 feet) of any U.S. lock.  The reservoir impounded by the dam is Lake Umatilla, and it runs 76.4 miles (123 kilometers) up the river channel to the foot of the McNary Dam.  John Day Dam is part of the Columbia River Basin system of dams. The Baozhusi Dam is a gravity dam on the Bailong River, located 23 km northwest of Guangyuan in Sichuan Province, China.  Construction on the dam began in 1984, the generators were operational between 1996 and 1998 while the rest of the facilities were complete 2000.  The dam was constructed for hydroelectric power generation, flood control and water supply for irrigation and industrial uses.  The 132 m tall concrete gravity dam creates a 2550000000 m3 reservoir with a surface area of 61.2 km2 .  On either side of power station at the dam's base, there are two gate-controlled chute spillways. Beside them are two pairs of intermediate sluice-controlled orifice openings.  Below the left intermediate opening are two bottom sluices.  The total discharge capacity of the spillways and openings is 16060 m3/s .  The dam's power station contains 4 x 175 MW Francis turbine-generators which are afford a maximum hydraulic head of 103 m given the dam's height. The Dibang Dam is a planned concrete gravity dam, located in the Lower Dibang Valley District in Arunachal Pradesh, India.  At the time of its future completion, it will be India's largest dam and the world's tallest concrete gravity dam, standing 288 m tall.  The Dibang Dam is expected to provide up to 3,000 megawatts of hydroelectric power, and will also assist with flood control in the Dibang Valley.  The foundation stone for the dam was laid on 31 January 2008 by Prime Minister Manmohan Singh.  Construction on the project, however, has yet to begin.  In 2013, the Ministry of Environment and Forests rejected the project's application but NHPC Limited will resubmit it in 2014.  The dam has also been under intense local and international opposition to its tentative negative environmental impacts and forced relocations. The Shiyazi Dam is a concrete gravity dam on the Hongjiadu River, a tributary of the Wu River, in Wuchuan County, Guizhou Province, China.  The primary purpose of the dam is hydroelectric power generation.  Construction on the dam began in 2007 and concrete pouring in April 2008.  The reservoir began to impound in September 2010.  The dam was "capped off" with concrete on 24 December 2011 and the generators were commissioned a week later on 31 December.  The dam, being located in a steep portion of Meilin Canyon, was difficult to construct.  The 134.5 m tall dam withholds a reservoir with a capacity of 321500000 m3 and was constructed with both normal concrete and roller-compacted concrete.  The dams power station is located 320 m downstream and contains two 70 MW Francis turbine-generators for an installed capacity of 140 MW. 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 Grande Dixence Dam is a concrete gravity dam on the Dixence at the head of the Val d'Hérémence in the canton of Valais in Switzerland.  At 285 m high, it is the tallest gravity dam in the world, fifth tallest dam overall, and the tallest dam in Europe.  It is part of the Cleuson-Dixence Complex.  With the primary purpose of hydroelectric power generation, the dam fuels four power stations, totaling the installed capacity to 2,069 MW , generating approximately 2,000 GWh annually, enough to power 400,000 Swiss households. Grand Coulee Dam is a concrete gravity dam on the Columbia River in the U.S. state of Washington, built to produce hydroelectric power and provide irrigation water.  Constructed between 1933 and 1942, Grand Coulee originally had only two powerhouses.  The third powerhouse, completed in 1974 to increase energy production, makes Grand Coulee the largest power station in the United States by nameplate-capacity at 6,809 MW.  However, in terms of yearly power production, Grand Coulee places fifth after a number of nuclear facilities to the south, like Palo Verde west of Phoenix.  This is because river flow varies throughout the year.  For example, while the dam may generate at nameplate-capacity in the spring, decreased river flow in the fall means less power can be generated the rest of the year, resulting in a lower capacity factor. The Hanford Site is a mostly decommissioned nuclear production complex operated by the United States federal government on the Columbia River in the U.S. state of Washington.  The site has been known by many names, including: Hanford Project, Hanford Works, Hanford Engineer Works and Hanford Nuclear Reservation.  Established in 1943 as part of the Manhattan Project in Hanford, south-central Washington, the site was home to the B Reactor, the first full-scale plutonium production reactor in the world.  Plutonium manufactured at the site was used in the first nuclear bomb, tested at the Trinity site, and in Fat Man, the bomb detonated over Nagasaki, Japan. The Chief Joseph Dam is a concrete gravity dam on the Columbia River, 2.4 km upriver from Bridgeport, Washington.  The dam is 877 km upriver from the mouth of the Columbia at Astoria, Oregon.  It is operated by the USACE Chief Joseph Dam Project Office, and the electricity is marketed by the Bonneville Power Administration.
Answer: Grant County Public Utility District