Question: What county shares a border with another county that contains Pelton Dam?

full_context: Document 1: Tiburon, California: Tiburon is an incorporated town in Marin County, California. It is located on the Tiburon Peninsula, which reaches south into the San Francisco Bay. The smaller city of Belvedere (formerly a separate island) occupies the south-west part of the peninsula and is contiguous with Tiburon. Tiburon is bordered by Corte Madera to the north and Mill Valley to the west, but is otherwise mostly surrounded by the Bay. Besides Belvedere and Tiburon, much of the peninsula is unincorporated, including portions of the north side and the communities of Strawberry and Paradise Cay.
Document 2: Owyhee Dam: Owyhee Dam (National ID # OR00582) is a concrete arch-gravity dam on the Owyhee River in Eastern Oregon near Adrian, Oregon, United States. Completed in 1932 during the Great Depression, the dam generates electricity and provides irrigation water for several irrigation districts in Oregon and neighboring Idaho. At the time of completion, it was the tallest dam of its type in the world (it was surpassed about two years later). The dam is part of the Owyhee Dam Historic District, which is listed on the National Register of Historic Places.
Document 3: Hydroelectric power in the United States: Hydroelectric stations exist in at least 34 US states. The largest concentration of hydroelectric generation in the US is in the Columbia River basin, which in 2012 was the source of 44% of the nation's hydroelectricity. Hydroelectricity projects such as Hoover Dam, Grand Coulee Dam, and the Tennessee Valley Authority have become iconic large construction projects.
Document 4: Miller, California: Miller is a former settlement in Marin County, California. It was located on the Northwestern Pacific Railroad south-southeast of downtown Novato, at an elevation of 23 feet (7 m). Miller still appeared on maps as of 1914.
Document 5: Great Works Dam: The Great Works Dam was a dam on the Penobscot River between Old Town and Bradley in Penobscot County, Maine, USA. The original Great Works Dam was constructed in the 1830s and replaced between 1887 and 1900. The dam was originally owned by the Penobscot Chemical Fibre Company and was acquired by Diamond International Corporation in 1968 along with the adjacent mill. The dam and powerhouse were sold several more times, and in 2010 the Penobscot River Restoration Trust bought the dam from PPL Corporation based on an agreement that was signed in 2004. On June 11, 2012, deconstruction of the dam began
Document 6: Cape Alava: Cape Alava, in Clallam County, Washington, U.S., is the westernmost point in the contiguous 48 states. The westernmost point is located in Olympic National Park and the Makah Indian Reservation.
Document 7: Mossyrock Dam: Mossyrock Dam is a concrete arch-gravity dam on the Cowlitz River near Mossyrock in Lewis County, Washington. The reservoir created by the dam is called Riffe Lake and the primary purpose of the dam is hydroelectric production while flood control is secondary. The dam is the tallest in Washington State and its hydroelectric power station supplies 40% of Tacoma Power's electricity.
Document 8: Douglas Dam: Douglas Dam is a hydroelectric dam on the French Broad River in Sevier County, Tennessee, in the southeastern United States. The dam is operated by the Tennessee Valley Authority (TVA), which built the dam in record time in the early 1940s to meet emergency energy demands at the height of World War II. Douglas Dam is a straight reinforced concrete gravity-type dam 1705 feet (520 m) long and 202 feet (62 m) high, impounding the Douglas Lake. The dam was named for Douglas Bluff, a cliff overlooking the dam site prior to construction.
Document 9: Miller Peninsula: The Miller Peninsula is a small peninsula in Clallam County, Washington and Jefferson County, Washington surrounded by Discovery Bay on the east, the Strait of Juan de Fuca to the north, and Sequim Bay to the west. Small residential communities on the peninsula include Blyn, at the southwest corner; Diamond Point, on the northeast corner; Gardiner, midway down the eastern shore; and Discovery Bay at the foot. See Discovery Bay, Washington for additional detail on placenames in the area.
Document 10: Seattle: Seattle is located between the saltwater Puget Sound (an arm of the Pacific Ocean) to the west and Lake Washington to the east. The city's chief harbor, Elliott Bay, is part of Puget Sound, which makes the city an oceanic port. To the west, beyond Puget Sound, are the Kitsap Peninsula and Olympic Mountains on the Olympic Peninsula; to the east, beyond Lake Washington and the eastside suburbs, are Lake Sammamish and the Cascade Range. Lake Washington's waters flow to Puget Sound through the Lake Washington Ship Canal (consisting of two man-made canals, Lake Union, and the Hiram M. Chittenden Locks at Salmon Bay, ending in Shilshole Bay on Puget Sound).
Document 11: Blaine, Washington: Blaine is a city in Whatcom County, Washington, United States. The city's northern boundary is the Canada–US border. The Peace Arch international monument lies partly in Blaine and partly in Canada. The population was 4,684 at the 2010 census. Since Blaine is located right on the border with Canada, it is the northernmost city on Interstate 5, while the southernmost city is San Ysidro, California.
Document 12: Agnew, Washington: Agnew is an unincorporated community in Clallam County, Washington, United States. It lies on a backroad leading to Port Angeles and just outside Sequim. Agnew is a primarily rural residential area located along the Strait of Juan de Fuca.
Document 13: Point No Point: Point No Point is an outcropping of land on the northeast point of the Kitsap Peninsula in Washington, the United States. It was the location of the signing of the Point No Point Treaty and is the site of the Point No Point Light. It was named by Charles Wilkes during the United States Exploring Expedition of Puget Sound in 1841.
Document 14: Deer Creek Dam and Reservoir: The Deer Creek Dam and Reservoir hydroelectric facilities are on the Provo River in western Wasatch County, Utah, United States, about northeast of Provo. The dam is a zoned earthfill structure high with a crest length of . The dam contains 2,810,000 cubic yards (2,150,000 m³) of material and forms a reservoir of capacity. Construction began in May 1938 and was completed in 1941. The reservoir supplies water for agricultural, municipal and industrial use. Recreational activities on and around the reservoir include boating, fishing, camping, swimming and water skiing.
Document 15: Pelton Dam: Pelton Dam is a major dam on the Deschutes River in Jefferson County, Oregon, owned and operated as a hydroelectric facility by Portland General Electric, one element of its Pelton Round Butte Project on the Deschutes.
ground_truth: Clallam County
sub_queries: Pelton Dam >> located in the administrative territorial entity Answer: Jefferson County
Jefferson County >> shares border with Answer: Clallam County