| Rock River | |
| Pushpin Map: | Michigan#USA |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Michigan |
| Source1 Location: | Worm Lake |
| Source1 Coordinates: | 46.5469°N -88.4754°W |
| Mouth: | Sturgeon River |
| Mouth Coordinates: | 46.5938°N -88.5412°W |
| Mouth Elevation: | 1227feet |
The Rock River is a 6.1adj=midNaNadj=mid stream in Baraga County on the Upper Peninsula of Michigan in the United States.[1] It rises at the outlet of Worm Lake, east of Covington, and flows northwest.[2] It eventually empties into the Sturgeon River which continues west, then north to Portage Lake and Lake Superior. The Rock River descends over its 6adj=onNaNadj=on course, for an average rate of 58 feet per mile.