Dinan

Dinan ; Breton: [ˈdinãn]) is a walled Breton town and a commune in the Côtes-d'Armor department in northwestern France. On 1 January 2018, the former commune of Léhon was merged into Dinan.Its geographical setting is exceptional. Instead of nestling on the valley floor like Morlaix, most urban development has been on the hillside overlooking the river Rance. The area alongside the river is known as the "port of Dinan", and is connected to the town by steep streets: Rue Jerzual and its continuation outside the city walls, the Rue Petit Fort. The Rance has moderate turbidity and its brownish water is somewhat low in velocity due to the very low gradient of the watercourse; pH levels have been measured at a slightly basic 8.13 within the city, and electrical conductivity of the waters has tested at 33 micro-siemens per centimetre. In the centre of Dinan, the Rance's summer flows are typically low, in the range of 500 cubic feet per second .