The Nivelle River is located in the Basque Country, flowing through southwestern France and northern Spain. It is approximately 25 kilometers long and is known for its picturesque landscapes and rich biodiversity. The river eventually joins the Bidassoa River, which forms part of the border between France and Spain. The Nivelle River is significant for its role in local agriculture and fishing. Its waters support various species of fish, making it a popular spot for anglers. Additionally, the river's banks are often used for recreational activities, attracting both locals and tourists to enjoy the natural beauty of the area.