Thornapple River
| Use attributes for filter ! | |
| Length | 142 km |
|---|---|
| Source | Eaton Rapids Township |
| Mouth | Grand River |
| Country | United States |
| ⁃ average | 1,000–1,500 cu ft/s (28–42 m3/s) at mouth |
| ⁃ elevation | 617188 |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2469229 |
About Thornapple River
The Thornapple River is an 88. 1-mile-long tributary of Michigan's longest river, the Grand River. The Thornapple rises in Eaton County, Michigan and drains a primarily rural farming area in Central Michigan. It joins the Grand in Ada, Michigan, 10 miles east of Grand Rapids.
