South Korea built the longest dam in the world: how Semangim changed the country.

On the southwestern coast of South Korea, where the Yellow Sea meets the land, the longest dam in the world — the Semangim dam — is located. Its length is 33 kilometers, making it the longest in the world. This structure has become a symbol of ambition, technological progress, and a subject of heated discussions. The editorial team of News.LIVE tells about the unique Semangim dam and why it attracts the attention of the entire world.

History of creation

In 1991, the South Korean government initiated a plan to build a dam that would connect three peninsulas near the city of Gunsan. The goal was to create new agricultural land and a reservoir. The total cost of the project was about 2 trillion won. Construction lasted 15 years and was completed in 2006, with the official opening taking place in 2010.

Uniqueness of Semangim

The Semangim dam is more than just a structure. Its average width is 290 meters, and the maximum width is 535 meters. The height of the dam varies from 36 to 54 meters. It separates the Yellow Sea from the former Semangim estuary, forming a vast reservoir.

A road runs along the dam, which is part of National Route 77. Additionally, there is a floating photovoltaic installation with a capacity of 2.1 GW, making Semangim an energy pearl.

Environmental controversies: the price of progress

During the construction of the Semangim dam, eco-activists announced its destructive impact on the ecosystem of the Yellow Sea. The river was home to many animal species that lost their habitat. Despite legal lawsuits, the project was completed.

What impresses the world about Semangim

• Record length — 33 kilometers.
• Multifunctionality.
• Innovations in construction.
• Economic impact.
• Symbol of progress.
• Floating solar station.
• Tourist appeal.
• Complex structure.

It is also reported that Finland has launched the largest sand battery in the world to optimize the use of renewable energy sources. Additionally, the world's most powerful hydroelectric power station has been built in China.

South Korea can be proud of its unique Semangim dam, which has become a symbol of technological progress and attracts the attention of both scientists and tourists. The dam embodies ambition and innovation in construction but has not come without environmental issues that have become the price for its creation.