Réserve naturelle régionale de l'Escaut-rivière, Regional nature reserve in Proville, France.

The Escaut-Rivière reserve is a 60-hectare wetland along the Escaut River with meadowland on one bank and alluvial forest on the other. The river acts as a natural boundary between these two distinct habitats that differ noticeably in their vegetation and composition.

The site received official designation as a regional nature reserve in 2011 following a 15-year restoration effort. This lengthy recovery period was essential to restore the natural habitats and their ecological systems to health.

The reserve is named after the Escaut-rivière, distinguished from the canalised Escaut downstream at Proville. Its open meadows are kept by late mowing and extensive grazing, carried out by the Conservatoire d'espaces naturels du Nord et du Pas-de-Calais with farmers and herders, since no large wild herbivores are present. The site also serves as a training ground, used by the Éducation nationale for training trainers and for introduction to heritage interpretation.

A 2-kilometer trail system connects the main areas of the reserve and is accessible from the Proville town hall parking area. The terrain is relatively flat and easy to walk, making it suitable for visitors of different abilities.

About 220 animal species were recorded here in 2012, 25 of them listed as being of heritage interest. The reserve protects the last relatively wild stretch of the Escaut, where the river still occupies almost the full width of its floodplain at Proville.