The Maas is a major river running through the Netherlands, entering near Maastricht from Belgium and flowing north toward Nijmegen before sweeping west, eventually joining the Waal at Hollands Diep and continuing to the North Sea. The river passes through a range of environments, from the natural Limburgse Maas section between Maastricht and Nijmegen — characterized by shallow depths, tight curves, old river arms, levees, stream channels, and gravel banks — to the heavily industrialized and commercial waterway through cities like Rotterdam.

The most significant hazard on the Maas is commercial shipping traffic. Large vessels travel the river continuously and do not easily see small paddlecraft. The wake and waves generated by these ships can be substantial and have been described as genuinely dangerous for canoes and kayaks. The current is also strong, particularly during high winds, when conditions can become wild and unpredictable. Paddlers are strongly advised to stay out of shipping lanes at all times and to wear a life jacket throughout any trip on the river.

In the Limburg section near the Belgian border, the river forms the boundary between the Netherlands and Belgium. This stretch passes through a nature reserve where motorized boats are not permitted, making it considerably more suitable for paddling than the lower river. Wildlife here includes bank swallows, kingfishers, herons, wild horses, and Galloway cattle visible from the water. The current in this section has been partially tamed by a lock at the Belgian border and the Julianakanaal bypass, which has three locks of its own, with five additional locks on the Maas between Roermond and the Kanaal van St Andries.

In Rotterdam, paddling the Maas is technically permitted but carries serious risks due to the density of large commercial vessels and strong currents. Those wishing to paddle in the Rotterdam area are advised to consider alternative waterways such as the Rotte or the Biesbosch wetlands instead. For those determined to access the Maas near Rotterdam, the beaches at De Esch have been noted as a relatively accessible entry point near the city center. Paddlers approaching from the Kralingse Plas can reach the Rotterdam canals and the Maas via a small lock, though this route involves navigating through the urban core.

Alcohol is not permitted on the water during organized paddling activities in the Limburg section, and swimming ability is required by at least one commercial operator there.