Canton of HarnesThe canton of Harnes is a canton situated in the department of the Pas-de-Calais and in the Hauts-de-France region of northern France.GeographyThe canton is organised around Harnes in the arrondissement of Lens. The elevation varies from 20m to 46m for an average elevation of 29m.CompositionAt the French canton reorganisation which came into effect in March 2015, the canton was expanded from 3 to 6 communes:Billy-MontignyBois-BernardFouquières-lès-LensHarnesNoyelles-sous-Lens Rouvroy