Jakarta, 27 August 2026 – Every August 27, the world celebrates World Lake Day. The United Nations established the observance following a resolution led by Indonesia. The first global celebration took place in 2025.
World Lake Day raises awareness of the importance of lakes around the world. It also encourages efforts to protect, preserve, and restore lake ecosystems. Lakes provide fresh water and support biodiversity. They also sustain communities, livelihoods, and cultures that have developed around them.
World Lake Day: Celebrating the World’s Lakes
Lakes are among the world’s most important freshwater ecosystems. They provide water for communities and support a wide range of plants and wildlife.
For many communities, lakes also hold deep cultural value. They can shape local traditions, livelihoods, and ways of life. Their importance goes far beyond their natural beauty.
World Lake Day reminds us of the need to care for these valuable ecosystems. It calls for greater awareness and action to keep lakes healthy for future generations.
Indonesia has played an important role in bringing this message to the global stage.
Indonesia’s Role in World Lake Day
Indonesia helped lead the initiative to establish World Lake Day through international water diplomacy.
The initiative gained momentum during the 10th World Water Forum in Bali. The forum brought together countries and organisations to discuss some of the world’s most important water challenges.
The United Nations later adopted the resolution to establish World Lake Day. This achievement reflects Indonesia’s commitment to sustainable water management and the protection of freshwater resources.
Indonesia is home to many lakes with unique natural and cultural value. Among them, Lake Toba stands out as one of the country’s most remarkable landscapes.
Lake Toba: A Natural Wonder of Indonesia
Located in North Sumatra, Lake Toba is one of Indonesia’s most famous natural wonders. It stretches approximately 100 kilometres long and 30 kilometres wide.
Lake Toba is the world’s largest volcanic lake and the largest lake in Southeast Asia.
Its story began around 74,000 years ago. A massive volcanic eruption created the huge caldera that eventually became Lake Toba. Today, the lake is surrounded by mountains, forests, villages, and local communities.
Its natural beauty is only part of its story. Lake Toba is also closely connected to the culture and history of the people who live around it.
More Than a Lake: The Story of Samosir
At the heart of Lake Toba lies Samosir Island. The island has deep historical and cultural connections to the region. Samosir is home to traditional villages, ancestral sites, and historic landmarks. Its landscape reflects the close relationship between people and nature. Life on the island remains closely connected to the lake. The water supports local communities and forms an important part of the region’s identity.
For visitors, Samosir offers more than beautiful views. It provides an opportunity to experience the history, traditions, and everyday life of the Lake Toba region.
Experiencing Lake Toba from Samosir
For those who want to experience Lake Toba beyond its scenery, Samosir Island offers an opportunity to connect with the lake, its landscapes, and its cultural heritage. Located in Tuktuk Siadong, Marianna Resort & Convention Tuktuk – Samosir, Marclan Collection sits along the shores of Lake Toba and offers a base for discovering the island.
The resort brings together views of the lake, local heritage, and contemporary hospitality. Guests can enjoy the natural surroundings while exploring nearby cultural and historical sites across Samosir. Marianna also offers activities such as water sports, cycling, and outdoor experiences that allow guests to experience Lake Toba from different perspectives.
With Lake Toba at the center of the experience, a stay in Samosir can be more than a visit to a scenic destination. It can be an opportunity to understand the relationship between the lake, the land, and the communities that call the region home.
The Living Heritage of Batak Culture
Lake Toba is deeply connected to the heritage of the Batak people, the indigenous communities of the region.
Traditional houses and villages can be found across the areas surrounding the lake. Music, ceremonies, crafts, and local stories also continue to play an important role in Batak culture.
These traditions connect generations with the history of the region. They also show how closely culture and nature are linked around Lake Toba.
Protecting Lake Toba therefore means protecting more than its waters. It also means supporting the culture, history, and communities that have grown alongside the lake.
Looking Beyond the Landscape
World Lake Day is a chance to see lakes as more than scenic destinations. They are living ecosystems and cultural landscapes.
Lake Toba is a powerful example of this connection. Its vast waters, volcanic history, natural surroundings, and Batak heritage come together to create a place unlike any other.
As we celebrate World Lake Day, Lake Toba reminds us that protecting our lakes is a shared responsibility. Caring for the lake means caring for the environment and the communities that depend on it.
It also means preserving the stories, traditions, and landscapes that make each lake unique.
When we protect a lake, we protect more than water. We protect a living part of our heritage for generations to come.
