Jachthaven De Waterwolf sits on the Reitdiep between Lauwerzijl and Oldehove, in the Middag–Humsterland region of Groningen. The marina offers 120 berths accommodating a range of vessels, from yachts to fishing boats, with 14 berths reserved for visitors.

A dedicated 150-metre visitor jetty is equipped with electricity, water points, and night lighting. Charted depth is KP-2. 20 m. The site is well positioned for exploring the Lauwersmeer and the wider waterways of Groningen and Friesland.

Onshore facilities include a boat trailer ramp and a diesel pump station. The combined camping and marina complex also features a café-restaurant, making it a practical and comfortable stop for cruising boaters.