| Castile Run | |
| Name Other: | Tributary to South Fork Tenmile Creek |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Castile Run mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States of America |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Greene |
| Subdivision Type4: | Township |
| Subdivision Name4: | Morgan |
| Length: | 5.21miles[1] |
| Discharge1 Avg: | 7.61cuft/s at mouth with South Fork Tenmile Creek[2] |
| Source1: | divide between Castile Run and Tenmile Creek (Barrs Run) |
| Source1 Location: | Castile, Pennsylvania |
| Source1 Coordinates: | 39.9903°N -80.1172°W[3] |
| Source1 Elevation: | 1200feet[4] |
| Mouth: | South Fork Tenmile Creek |
| Mouth Location: | Chartiers, Pennsylvania |
| Mouth Coordinates: | 39.9622°N -80.0558°W |
| Mouth Elevation: | 810feet |
| Progression: | southeast |
| River System: | Monongahela River |
| Tributaries Left: | Bacon Run |
| Tributaries Right: | unnamed tributaries |
Castile Run is a small tributary to South Fork Tenmile Creek in southwestern Pennsylvania. The stream rises in northeastern Greene County and flows southeast entering South Fork Tenmile Creek at Chartiers, Pennsylvania. The watershed is roughly 25% agricultural, 69% forested and the rest is other uses.[2]
Castile Run rises at Castile, Pennsylvania,[4] and then flows southeast to join South Fork Tenmile Creek at Chartiers.[4]
Castile Run drains of area, receives about 40.6 in/year of precipitation, has a wetness index of 306.97 and is about 69% forested.[2]