Question 1

Can I scuba dive at both Groene Heuvels and Berendonck?

Accepted Answer

Yes, Leisurelands explicitly lists scuba diving at both recreation lakes. Groene Heuvels in Ewijk has a shore-entry object circuit and is listed with a maximum depth of {{ 28 | distance:m }}. Berendonck in Wijchen is listed with {{ 18 | distance:m }} and often lower visibility. The Berendonck Aquavilla-side club area is not a walk-in commercial dive center: contact Duikteam De Kaaiman first for an ordinary dive appointment. Keep to authorized entrances and the route appropriate for your qualification. Published maximum lake depths are not target depths or evidence of safe conditions on your travel day.

Question 2

Is the Aquavilla underwater house or escape room at Berendonck open?

Accepted Answer

No, not as a bookable visitor experience in the current club notices. Duikteam De Kaaiman says that ordinary lake dives may still be arranged in its area, but access to the Aquavilla underwater house and escape room is suspended under occupational-safety regulations. The club says its site has not been freely accessible since August 2023 and requests advance contact at owh@kaaiman.nl. Some tourism and dive directories still describe the former attraction. Do not rely on those older descriptions or treat the underwater house as an accessible penetration dive. Confirm a normal open-water dive directly with the club.

Question 3

When is the best time to dive or snorkel around Nijmegen and Wijchen?

Accepted Answer

May through September is the practical overall window for a lake day, while June through August tends to be the more comfortable choice for ordinary surface snorkeling. Leisurelands says official bathing-water monitoring runs from 1 May through 30 September. That is a water-quality sampling season, not an unconditional permission statement. Scuba can be considered beyond summer by divers experienced and equipped for cold water, but no verified site-specific winter operating schedule was published. Water clarity and temperature vary substantially, and freshwater plants at Groene Heuvels become more prominent in summer. Check an up-to-date site report and official advisories.

Question 4

Where can I snorkel safely at Groene Heuvels and Berendonck?

Accepted Answer

Use only the designated recreational bathing zones indicated by provincial information signs and current zwemwater.nl maps. Leisurelands recommends marked beaches and warns that there may not always be a floating buoy line. A June 2026 Duikspotter article specifically describes snorkeling among summer plants at Groene Heuvels. At Berendonck, normal swimming is documented, but a guided snorkeling service and unrestricted snorkel access to the club dive zone were not verified. Keep a watchful companion, avoid other water sports, and turn back if visibility deteriorates. Neither recreation area supplies lifeguard surveillance or an onsite first aid post.

Question 5

Can I train for freediving depth at Groene Heuvels or Berendonck?

Accepted Answer

Not on the evidence currently available. The Dutch Freediving Association lists regional instruction, including Freedive4me for Nijmegen/Arnhem and Maldive 87 in Wijchen, and Maldive 87 reports pool and outdoor activities. However, no authoritative source examined identifies a general-public approved freediving depth zone, buoy-line site, visitor guide or dates at either specific lake. Ask a qualified instructor to confirm the actual lake, manager permission, training safety team and rescue arrangements. Do not treat scuba depths or swimmer access as permission for depth apnea. Never freedive alone or hyperventilate before a breath hold.

Question 6

How much does it cost to visit the lakes, and do I need a diving permit?

Accepted Answer

Leisurelands says general access to each recreation area is free. For a standard vehicle up to {{ 6 | distance:m }}, parking is EUR 7 from 1 May through 30 September and EUR 3.50 from 1 October to 1 May; larger vehicles cost more. Payment is contactless or through the posted QR system. No separate universal scuba lake permit was substantiated. The Berendonck De Kaaiman club page instead publishes an appointment-only visitor contribution of EUR 4 per diver with EUR 24 group minimum, subject to current confirmation. Commercial lessons, rentals, wellness and cable sports are priced separately.

Question 7

What certification and gear should I bring for the lake dives?

Accepted Answer

A valid open-water scuba certification is the baseline for suitable shallow routes, together with a competent buddy and location briefing. Groene Heuvels includes small wreck objects and a deeper training platform, not a requirement to dive deep or penetrate structures. Berendonck can have limited visibility and colder deeper water. Bring regulators approved for the actual temperatures, a sufficiently warm exposure suit or drysuit, a compass and a light. Contact local clubs ahead of time about tank filling and rental availability: De Kaaiman fills cylinders for members only and ScubaXperience reports its Nijmegen retail storefront closed in July 2026.

Question 8

Can I do a night dive at Groene Heuvels?

Accepted Answer

Duikersgids states that divers wishing to make a night dive at Groene Heuvels should notify Leisurelands at least one day ahead via info@leisurelands.nl. However, the current published Leisurelands terrain regulations generally limit park visitation to between sunrise and sunset unless an exception applies, and normal vehicle entry ends at 22:00. These sources should not be interpreted as an unrestricted standing night-dive approval. Ask Leisurelands for explicit current permission, where to enter and park, and any activity-specific conditions. Bring a trained buddy, redundant lighting and a clearly documented emergency and exit plan.

Question 9

How do I reach Groene Heuvels and Berendonck without a car?

Accepted Answer

Nijmegen is a useful rail and lodging base, while Wijchen is closer to Berendonck. Leisurelands says Berendonck is reachable by bicycle and indicates a bus corridor from Nijmegen toward Uden, but bus lines and stops should be checked live. Groene Heuvels is in Ewijk, accessed by the Ficarystraat or Laarsdijk cycling approaches; the owner emphasizes car and bicycle directions rather than an assured direct public bus. A rental bicycle can work for light swimming equipment, but a car or arranged lift is more practical for scuba cylinders and multiple heavy bags. Check NS and 9292 before travel.

Question 10

What can a non-diver do while others are diving?

Accepted Answer

Both lakes have shoreside recreation, but non-divers should not use diving facilities or water-sports lanes casually. Groene Heuvels has beaches, playgrounds, a terrace and listed adventure activities; Berendonck has a cable-watersports center offering SUP, kayaking and wakeboarding, and Thermen Berendonck nearby for a separate wellness visit. Away from the lakes, Museum Kasteel Wijchen provides indoor history and archaeology. Nijmegen offers historic streets, Stevenskerk and the riverside De Bastei museum. Activity prices, reservations, opening hours and age restrictions differ. For an easy reunion, agree on a designated public beach or cafe rather than the club-only Aquavilla area.

Question 11

What water safety and medical services are available near the lakes?

Accepted Answer

Leisurelands explicitly states that there are no lifeguards or first aid stations at its recreation areas. Natural swimming water can have sudden changes in depth, temperature and visibility. Check current provincial water-quality warnings and keep companions in sight. For a life-threatening emergency call 112 and state the precise lake, car park or entry. Radboudumc has a 24-hour emergency department in Nijmegen at Geert Grooteplein 22. For a suspected dive injury, seek emergency care first, administer oxygen only if trained and equipped, then coordinate specialist diving-medical advice through DAN Europe. Do not self-transport to an assumed decompression chamber.

Question 12

Will I see pike, carp or crayfish when diving at Groene Heuvels?

Accepted Answer

Groene Heuvels is known for freshwater vegetation and fish. Leisurelands names carp, pike, perch, eel and freshwater crayfish; a June 2026 field report describes summer plant beds and diverse sightings. Berendonck also has perch, pike and crayfish, though its published visibility of roughly {{ 1 | visibility:m }} to {{ 3 | visibility:m }} may make wildlife searches harder. These are possible species, not encounter guarantees. Stay neutrally buoyant, avoid stirring sediment, do not handle wildlife or submerged objects and respect any fishing zones. Summer offers more plant structure, but visibility can still be low on busy days.

Two Dutch freshwater dive lakes, with city history and easy shore-day add-ons

What Makes It Special

Where to dive

Bemmelerwaard

De Groene Heuvels

Ressen

Wildlife In Nijmegen and Wijchen Lakes

Perch

Plan your visit

Getting there and around

Safety and conservation

FAQs

Nijmegen and Wijchen Lakes