The Shields Branch is a tributary of the Big Black River, flowing in: Quebec : in the administrative region of Chaudière-Appalaches, in L'Islet Regional County Municipality, in the municipalities of Sainte-Perpétue, Chaudière-Appalaches, Quebec, Saint-Omer, Quebec and Saint-Pamphile, Quebec; Maine : in the Aroostook County, Township T15 R15 Wels. Wikipedia