55     0401 Western Lake Superior
55     0402 Southern Lake Superior-Lake Superior
55     0403 Northwestern Lake Michigan
55     0404 Southwestern Lake Michigan
55     0406 Northeastern Lake Michigan-Lake Michigan
55     0703 The St. Croix River Basin
55     0704 Upper Mississippi-Black-Root
55     0705 The Chippewa River Basin
55     0706 Upper Mississippi-Maquoketa-Plum
55     0707 The Wisconsin River Basin
55     0709 The Rock River Basin
55     0712 The Illinois River Basin