Sado

Sado (sä`dō), island, 330 sq mi (855 sq km), in the Sea of Japan, off the west coast of N Honshu, Japan. Mt. Kimpoku (3,872 ft/1,180 m) is the highest point. The fertile central lowlands are an important rice-growing region; fishing and tourism are also important. Aikawa, the administrative center of the island, is the site of gold and silver mines which have been worked since 1601. In feudal times the Emperor Juntoku and the priest Nichiren were exiled there.

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Sado 

an island in the Sea of Japan, 30 km west of the island of Honshu; part of Japan. Area, 857 sq km. Population, 92,000 (1970). Two mountain ranges, separated by a low isthmus, extend across the island from southwest to northeast; the highest point, Mount Kinpoku, reaches 1,173 m. Rice, wheat, and sweet potatoes are grown. Sado has fishing. Its main port is Ryotsu.

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Sado 

a river in southern Portugal. The Sado is 175 km long and drains an area of 7,600 sq km. It originates in the spurs of the Serra da Algarve and empties into the Bay of Setúbal in the Atlantic Ocean, forming an estuary, which is separated from the bay by a sandbar. The Sado is fed by rain; the water level is highest in the winter. The mean flow rate is approximately 40 cu m per sec. The lower Sado is navigable at high tide. The seaport of Setúbal is on the estuary.