South Branch Grass River
| South Branch Grass River | |
|---|---|
| Location | |
| Country | United States |
| State | New York |
| Physical characteristics | |
| Mouth | Grass River |
• location | Clare, New York |
• coordinates | 44°22′48″N 75°04′30″W / 44.38000°N 75.07500°W |
• elevation | 779 ft (237 m) |
| Basin size | 138 sq mi (360 km2) |
The South Branch Grass River flows into the Grass River in Clare, New York. The South Branch Grass River and Middle Branch Grass River combine here and become Grass River.