Lakes in Noordhollands Duinreservaat are situated within an extensive nature reserve along the North Sea coast in the Dutch province of North Holland. This area features diverse landscapes including dunes, forests, and various water bodies. The reserve is also significant for drinking water production and hosts diverse flora and fauna, such as Scottish Highland cattle and wild horses. Exploring these lakes offers opportunities to experience the unique dune landscape, whether for a swim, a picnic, or as a destination during a hike or bike ride.
Last updated: July 5, 2026
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These cattle are magnificent
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Beautiful cycling route with lots to see.
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beautiful landscape
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The water that is pumped into the dunes at De Kwal comes from the IJsselmeer. The water is pumped from the IJsselmeer at Andijk, purified, and transported to Heemskerk via a 52 km long pipe. There it is filtered again and is allowed to enter the dunes at 'de kwal'. There the water slowly seeps into the soil and is naturally freed of bacteria and viruses. After at least 30 days, the clean water is pumped up from a depth of 40 metres, freed of iron and lime and the drinking water is suitable for consumption. 800 litres per second Every second, the daily consumption of 6 people flows out of 'de kwal'. That is approximately 800 litres of water per second (2850 m3 per hour). On an annual basis, this amounts to 25,000,000,000 litres of water.
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Picturesque landscape, there is a lot to discover on, in and next to the water.
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A beautiful water-rich landscape that also functions as a drinking water supply.
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For swimming, 't Wed Lake and Oosterplas are highly recommended. 't Wed Lake offers clean, clear water with a sandy beach and facilities, while Oosterplas provides a more natural, sheltered swimming area with a substantial sandy beach, ideal for cooling off after a walk or bike ride through the dunes.
Yes, both 't Wed Lake and Oosterplas are excellent choices for families. 't Wed Lake is known for its safe swimming conditions with shallow areas for children and a natural playground feel. Oosterplas, with its clear water and sandy shores, is also very suitable for children to play, guaranteeing hours of fun with just water and sand. The Infiltration Area in the Dunes of Castricum and the Dune lake are also noted as family-friendly highlights within the reserve.
The lakes are nestled within a diverse dune landscape, featuring forests, heath, and sandy areas. Around 't Wed Lake, you can find unique 'petrified oaks' on a nearby sand hill. The entire reserve is significant for drinking water production, with highlights like the Infiltration Area in the Dunes of Castricum showcasing this water-rich landscape. You might also encounter diverse flora and fauna, including Scottish Highland cattle and wild horses.
Absolutely. The lakes are easily accessible via scenic routes through the surrounding dunes and forests, making them perfect destinations during a longer hike or bike ride. The Noordhollands Duinreservaat offers numerous trails. For hiking, you can explore routes like the 'Low-threshold North Holland routes - Water birds and play dunes' or 'Dunes, views and heath in the Bergerbos'. Cyclists can enjoy routes like 'Schoorl Dunes MTB Trail' or 'Egmond viewpoint!' which pass through the beautiful dune landscape. You can find more details on these activities in the hiking guide, running guide, and MTB guide for the region.
't Wed Lake is a well-regarded natural spot known for its cleanliness, clear water, and tranquil setting within the dune area. It features a sandy beach, making it popular for swimming, sunbathing, and picnics. It's also notable for the 'petrified oaks' found on a nearby sand hill and offers toilet facilities.
Oosterplas is highly valued for its quiet and sheltered environment, offering a relaxing spot to cool off. It provides a natural swimming area with clear water and a substantial sandy beach. Its untouched natural ambiance, due to the absence of extensive facilities, makes it a peaceful retreat, especially for families with children.
Yes, the Noordhollands Duinreservaat plays a crucial role in drinking water production. The Infiltration Area in the Dunes of Castricum is a prime example of a lake that functions as a drinking water supply. Additionally, the De Kwal Water Outlet is an impressive site where water from the IJsselmeer is pumped into the dunes for purification before becoming tap water.
The Noordhollands Duinreservaat is home to diverse wildlife. You have a good chance of encountering Scottish Highland cattle and wild horses, which roam freely in the reserve. The Highland cattle and horses in the Noordhollands Duinreservaat highlight specifically mentions these animals. The area also hosts a variety of bird species and interesting plants, especially around the ponds and lakes.
For swimming, the period between April and October is ideal as water quality is monitored. To enjoy a quieter experience, especially at popular spots like 't Wed Lake, it's recommended to visit on weekdays or during early mornings/late afternoons. The diverse landscape makes it enjoyable throughout the year for hiking and cycling, with seasonal changes offering different scenic views.
Facilities vary by lake. 't Wed Lake offers toilet facilities, while Oosterplas typically does not have extensive facilities like toilets or catering, contributing to its untouched natural ambiance. For other lakes and areas within the reserve, it's advisable to check specific information before your visit.
While popular lakes can attract visitors, the extensive nature reserve offers many paths where you can find tranquility. Exploring the broader dune landscape away from the main swimming spots, especially during off-peak hours or weekdays, can lead to more peaceful walks. The varied terrain of sandy areas, heath, and forest provides numerous opportunities for quiet contemplation and enjoying nature.
The lakes are generally well-integrated into the reserve's network of paths, making them accessible by foot or bike. Parking is available at various entry points to the Noordhollands Duinreservaat, from where you can walk or cycle to the lakes. Public transport options might involve bus routes to towns bordering the reserve, followed by a walk or bike ride into the dunes.
Visitors particularly appreciate the serene escape offered by the lakes, their clean and clear waters, and the opportunity to combine swimming with outdoor activities like hiking and cycling through the unique dune landscape. The natural beauty, the chance to encounter wildlife like Highland cattle, and the family-friendly atmosphere are frequently highlighted as key attractions.


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