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Lac Courte Oreilles (/ləˈkuːdəreɪ/ lə-KOO-də-ray) is a large freshwater lake located in northwest Wisconsin in Sawyer County in townships 39 and 40 north, ranges 8 and 9 west. It is irregular in shape, having numerous peninsulas and bays, and is approximately six miles long in a southwest to northeast direction and with a maximum width of about two miles (3 km). Lac Courte Oreilles is 5,039 acres (20.39 km2) in size with a maximum depth of 90 feet (27 m) and a shoreline of 25.4 miles (40.9 km). The lake has a small inlet stream (Grindstone Creek) that enters on the northeast shore of the lake and flows from Grindstone Lake, a short distance away to the north. An outlet on the southeast shore of the lake leads through a very short passage to Little Lac Courte Oreilles, then via the Couderay