Best lakes in La Fortuna are often associated with the region's volcanic landscape, particularly near the Arenal Volcano. This area in Costa Rica is characterized by its diverse natural features, including significant bodies of water. The lakes here are often formed by volcanic activity or human intervention for hydroelectric power. La Fortuna's natural environment provides a setting for various outdoor activities centered around these aquatic features.
Last updated: May 25, 2026
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It's included in the Arsenal National Park entrance fee and is far less visited. You can see quite a bit of wildlife. The approach via the unpaved road from Arsenal should definitely be avoided with a 2WD, and in my opinion, with a 4WD.
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This green lake contrasts with the rest of the park because it is surrounded by slightly less dense vegetation and a little higher up there are meadows with humped cows.
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We had to pay the 12 USD per person at the waterfall lodge and didn't even get to the crater lake. We were intercepted beforehand by the rangers who sent us back. They told us again that it was illegal for the lodge to charge entry into this area, that the trail was not their property. Call the tourist police. The lodge is getting richer and it is also a thorn in the side of the rangers and the tourist police.
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Lago Los Patos (Duck Lake) was formed during the eruptions of the volcano.
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Closed for the time being due to many poisonous snakes on the way.
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Bring enough water to the hike taking into account the way back, as the path can be exhausting and it takes longer than 1.5-2 hours (which is what the locals told us).
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Interesting view of the lake. The volcano is not visible from here.
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The La Fortuna area features a variety of lakes, primarily associated with its volcanic landscape. You'll find crater lakes formed by volcanic activity, such as Cerro Chato Crater Lake and Los Patos Lake. Additionally, the region is home to larger bodies of water like Lake Arenal, which was significantly expanded for hydroelectric power.
Lake Arenal is a hub for world-class water sports. You can enjoy windsurfing and sailboarding, especially from November through April when conditions are ideal. Kayaking, stand-up paddleboarding, boat tours, and jet skiing are also popular. For anglers, the lake offers superb fishing, particularly for rainbow bass.
Yes, several lakes offer beautiful views. Green Lake is a notable viewpoint, contrasting with its surroundings due to less dense vegetation and nearby meadows. While the volcano isn't visible from Los Patos Lake, it still offers an interesting view of the lake itself.
For optimal windsurfing and sailboarding conditions on Lake Arenal, the best time to visit is typically from November through April. During these months, the lake experiences strong winds and warm waters, making it ideal for these activities.
Yes, the area around the lakes, especially near Lake Arenal, offers various hiking opportunities. While some crater lake trails can be challenging, such as the path to Cerro Chato Crater Lake (currently closed), you can also find other trails for exploring the natural surroundings. For more structured hiking, consider routes like the 'Poza El Salto - Río Fortuna loop' or 'Mirador Volcán loop' which are moderate to difficult and can be found in the Running Trails in La Fortuna guide.
Absolutely. The La Fortuna area provides excellent cycling routes, including those around Lake Arenal. You can find various options for both touring and road cycling. For example, the 'Lake Arenal – Arenal Volcano loop' is a moderate road cycling route. More options are available in the Cycling in La Fortuna and Road Cycling Routes in La Fortuna guides.
The area around Lake Arenal is rich in biodiversity. You might spot various bird species, including hummingbirds, woodpeckers, kingfishers, toucans, and aricaris. The lake itself is home to fish species such as rainbow bass, machaca, and tilapia.
Yes, Cerro Chato Crater Lake is currently closed due to the presence of poisonous snakes on the trail. Additionally, access to the 'Swimming Spot at the Crater Lake' has been problematic, with reports of illegal charges and rangers intercepting visitors, stating the trail is not for public entry.
Given the potential for challenging hikes and variable weather, it's advisable to bring sufficient water, especially for longer trails. Sturdy footwear is essential for demanding routes. If you plan on water activities, pack appropriate gear. Always be prepared for muddy and slippery conditions, particularly during or after rain.
While a small lagoon existed naturally, the current Lake Arenal was significantly expanded in 1973 with the construction of a dam. This hydroelectric project by the Costa Rican Institute of Electricity transformed it into the largest lake in Costa Rica, primarily serving as a vital source of energy for the country.
Yes, Los Patos Lake is an example of a lake formed during volcanic eruptions in the La Fortuna area, offering a unique geological feature to explore.


Still not found your perfect lake in La Fortuna? Check out the guides of these regions to see even more beautiful places.