The river Nonette runs through the town itself. This 44 km-long river is also part of the watershed of the Oise and is channeled into canals throughout the municipality. In fact, the creation of the château gardens by André Le Nôtre required the complete transformation of the waterway starting in 1663. The riverbed was moved a hundred meters north to create the 2.5 km-long Grand Canal that runs in front of the château. The old riverbed became the 800m-long Canal Saint-Jean, named after a 16th-century chapel demolished when the gardens were created. The Canardière, beneath the actual viaduct, was channeled and cleaned up at this time also.