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How long and wide was the Dead Sea before its water level began to drop significantly?

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White salt deposits cover rocks along the shore of the Dead Sea near Masada, Israel, with green water and dramatic cloudy sky in the background. — Dead Sea Salt deposits at the Dead Sea near Masada, Israel.

Before its water level began to drop significantly, the Dead Sea was approximately 50 miles (80 km) long and reached a maximum width of 11 miles (18 km). During this period, it maintained a surface area of about 394 square miles (1,020 square km).1