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Arenal Lake: Costa Rica's Inland Sea

Discover Costa Rica's largest lake: a hub for adventure, wildlife, and stunning views of the majestic Arenal Volcano.

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Arenal Lake, Costa Rica's largest lake, is a stunning man-made reservoir set against the backdrop of the Arenal Volcano. Created in the 1970s for hydroelectric power, it's now a prime destination for water sports, fishing, and wildlife viewing, offering breathtaking scenery and a tranquil escape.

A brief summary to Represa del lago Arenal

  • 142 Alajuela, San Carlos, Alajuela Province, CR

Local tips

  • Visit early in the morning for tranquil waters perfect for photography and kayaking.
  • Check with local fishermen for secret spots to glimpse exotic birds and wildlife.
  • Book hotels and tours in advance, especially during peak season, to secure the best views and experiences.
  • Bring binoculars for enhanced wildlife viewing opportunities around the lake.
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Getting There

  • Driving

    From La Fortuna, take Route 142 west towards Arenal Lake. The drive is approximately 30 minutes. Parking is available at various points along the lake, including near the dam and at the Arenal Boat Rental Association. Parking fees range from 2,000-4,000 CRC.

  • Public Transport

    A public bus travels from La Fortuna to the area around Arenal Lake twice daily, departing at 8 AM and 2 PM from the La Fortuna bus station. The fare is approximately $5 USD. This bus can drop you off at various points along the lake.

  • Taxi

    Taxis are readily available in La Fortuna. A taxi from La Fortuna to Arenal Lake will cost approximately $25-$40 USD. Negotiate the price before starting your journey.

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Discover more about Represa del lago Arenal

Arenal Lake (Lago Arenal) is a sprawling 85-square-kilometer man-made lake nestled in the northern highlands of Costa Rica. Formed by the construction of the Presa Sangregado Dam between 1972 and 1976, the lake serves as a vital source of hydroelectric power, initially providing up to 70% of the country's electricity. Today, it still contributes significantly to Costa Rica's green energy initiatives. Before the dam, a smaller natural lake existed in the valley. The creation of the reservoir tripled its size, leading to the inundation of the towns of Arenal and Tronadora. Residents were relocated to Nuevo Arenal, a town built overlooking the new lake. At low water levels, remnants of the submerged communities can still be seen. The lake's depth fluctuates between 30 and 60 meters depending on the season, creating temporary islands that make navigation challenging. Despite this, Arenal Lake has become a popular destination for tourists and locals alike. Its waters teem with machaca and rainbow bass, attracting anglers. The surrounding area is home to a diverse array of wildlife, including over 120 species of mammals, 300 species of birds, and 2,000 species of plants. Visitors can spot howler monkeys, tapirs, and various bird species along the shores. Water sports enthusiasts flock to Arenal Lake for kayaking, paddleboarding, windsurfing, and boat tours. The consistent winds have earned it a reputation as one of the world's best windsurfing destinations. Boat tours offer stunning views of the Arenal Volcano and the surrounding landscape, with opportunities for bird watching and wildlife spotting.

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