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Represa del Lago Arenal: Costa Rica's Hydroelectric Heart

Discover Costa Rica's largest lake, a hub for green energy, water sports, and breathtaking views of the Arenal Volcano.

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Represa del Lago Arenal, or Arenal Lake Dam, is a crucial hydroelectric facility in Costa Rica, significantly contributing to the nation's green energy efforts. The dam transformed the original Lake Arenal into the country's largest lake, offering stunning views and various recreational activities.

A brief summary to Represa del lago Arenal

  • 142 Alajuela, San Carlos, Alajuela Province, CR

Local tips

  • Visit during the dry season (December to April) for the best weather and clear views of Arenal Volcano.
  • Bring binoculars for birdwatching, as the lake and surrounding forests are home to diverse avian species.
  • Consider a boat tour for panoramic views of the lake and volcano, and to spot wildlife along the shoreline.
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Getting There

  • Driving

    From La Fortuna, take Route 142 west towards Nuevo Arenal. The drive is approximately 1.5-2 hours, offering scenic views of the countryside. Parking is available near the dam. Note that road conditions can vary, so a 4x4 vehicle is recommended, especially during the rainy season. Parking near the dam is generally free.

  • Public Transport

    Take a bus from La Fortuna to Tilarán. From Tilarán, you can take a taxi to the dam. The bus from La Fortuna to Tilarán costs around $7 USD, and the taxi from Tilarán to the dam will cost approximately $20-$30 USD. Buses from La Fortuna to Tilaran depart at 8:00 AM, 12:15 PM and 5:30 PM.

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Discover more about Represa del lago Arenal

Represa del Lago Arenal, the Arenal Lake Dam, stands as a testament to Costa Rica's commitment to sustainable energy and its innovative use of natural resources. Completed in 1979, the dam tripled the size of the original Lake Arenal, creating an 85-square-kilometer reservoir that is now the largest lake in Costa Rica. This man-made lake is not only a vital source of hydroelectric power, initially generating 70% and now contributing around 17% of the country's electricity, but also a stunning natural attraction. The creation of Lake Arenal necessitated the relocation of the towns of Arenal and Tronadora, whose former sites now lie beneath the lake's surface. Today, Nuevo Arenal offers visitors a glimpse into small-town Costa Rican culture with active nightlife and the beautiful Arenal Botanical Gardens. The lake's fluctuating water levels reveal islands and create ideal conditions for fishing, particularly for machaca and rainbow bass. The surrounding area is teeming with wildlife, including over 100 mammal species and numerous bird species, making it a haven for nature enthusiasts. Visitors can enjoy kayaking, windsurfing, boat tours, and horseback riding, all set against the backdrop of the majestic Arenal Volcano. The dam not only provides essential power but has also fostered a thriving ecosystem and recreational area, making it a must-see destination in Costa Rica.

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