Calvin Run
| Calvin Run Tributary to Dunkard Creek | |
|---|---|
Location of Calvin Run mouth Calvin Run (the United States) | |
| Location | |
| Country | United States |
| State | Pennsylvania |
| County | Greene County |
| Physical characteristics | |
| Source | Whiteley Creek divide |
| • location | about 1.25 miles south of Kirby, Pennsylvania |
| • coordinates | 39°47′07″N 080°06′42″W / 39.78528°N 80.11167°W |
| • elevation | 1,180 ft (360 m) |
| Mouth | Dunkard Creek |
• location | about 0.25 miles northeast of Mount Morris, Pennsylvania |
• coordinates | 39°44′41″N 080°03′41″W / 39.74472°N 80.06139°W |
• elevation | 900 ft (270 m) |
| Length | 4.18 mi (6.73 km) |
| Basin size | 1.78 square miles (4.6 km2) |
| Discharge | |
| • location | Dunkard Creek |
| • average | 8.02 cu ft/s (0.227 m3/s) at mouth with Dunkard Creek |
| Basin features | |
| Progression | generally southeast |
| River system | Monongahela River |
| Tributaries | |
| • left | North Branch Calvin Run Watkins Run |
| • right | unnamed tributaries |
| Bridges | US 19, Haines Hill Road, US 19, I-79, Dooley Run Road |
Calvin Run is a 1.63 mi (2.62 km) long first-order tributary to Dunkard Creek in Greene County. This is the only stream of this name in the United States.