Select a Hydrologic Unit Code to view region-specific data:
- Twin Creek
- Clear Lake
- 1 – Higgins Lake
- 2 – Backus Creek
- 3 – Houghton Lake
- 4 – Dead Stream
- 5 – Haymarsh Lake
- 6 – West Branch Muskegon River
- 8 – Butterfield Creek
- 9 – Wolf Creek
- 10 – Townline Creek
- 11 – Floodwood Creek
- 12 – Lake Mitchell
- 13 – Upper Clam River
- 14 – Mosquito Creek/Lake Missaukee
- 15 – Middle Clam River
- 16 – West Branch Clam River
- 17 – Lower Clam River
- 18 – Green Creek
- 19 – Middle Branch River
- 20 – Doc and Tom Creek
- 21 – Big Lake
- 22 – Strawberry Lake
- 23 – Hersey River
- 24 – Buckhorn Creek
- 25 – Ryan and Mitchell Creeks
- 26 – Hardy Dam Pond
- 27 – E Branch Little Muskegon River
- 28 – Upper Little Muskegon River
- 29 – Little Muskegon River-Handy Creek
- 30 – Upper Tamarack Creek
- 31 – Lower Tamarack Creek
- 32 – Lower Little Muskegon River
- 33 – Croton Dam Pond
- 34 – Bigelow Creek
- 35 – Hess Lake
- 36 – Brooks Creek
- 37 – Cedar Creek
- 38 – Mosquito Creek
- 39 – Bear Creek
- 40 – Muskegon Lake
