Lac Courte Oreilles /ləˈkuːdəreɪ/ is a large freshwater lake located in north west 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, being 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 that flows from Grindstone Lake, a short distance away to the north.