"Big Hole River"@en . . . . . "2246.99"^^ . . "246230.0"^^ . . . . . "The Big Hole River (Salish: Sk\u034F\u02B7umcn\u00E9 Sew\u026Bk\u034F\u02B7s, \"waters of the pocket gopher\" ) is a tributary of the Jefferson River, approximately 153 miles (246 km) long, in Beaverhead County, in southwestern Montana, United States. It is the last habitat in the contiguous United States for native fluvial Arctic grayling and is an historically popular destination for fly fishing, especially for trout."@en . "Sk\u034F\u02B7umcn\u00E9 Sew\u026Bk\u034F\u02B7s"@en . "1405.13"^^ .