| Ralston Run | |
| Name Other: | Tributary to Dutch Fork |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Ralston Run mouth |
| Pushpin Map Alt: | Map of Ralston Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Washington |
| Length: | 1.68miles[1] |
| Discharge1 Location: | Dutch Fork |
| Discharge1 Avg: | 2.07cuft/s at mouth with Buffalo Creek[2] |
| Source1: | Castleman Run divide |
| Source1 Location: | about 2 miles southwest of Budaville, Pennsylvania |
| Source1 Coordinates: | 40.1478°N -80.4986°W[3] |
| Source1 Elevation: | 1160feet[4] |
| Mouth: | Dutch Fork |
| Mouth Location: | about 1 mile south-southwest of Budaville, Pennsylvania |
| Mouth Coordinates: | 40.1494°N -80.4753°W |
| Mouth Elevation: | 928feet[5] |
| Progression: | Dutch Fork → Buffalo Creek → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Lake Road |
Ralston Run is a 1.68miles long 1st order tributary to Dutch Fork in Washington County, Pennsylvania.
Ralston Run rises about 2 miles southwest of Budaville, Pennsylvania, in Washington County and then flows southeast then northeast to join Dutch Fork about 1 mile south-southwest of Budaville.[5]
Ralston Run drains of area, receives about 40.4 in/year of precipitation, has a wetness index of 286.81, and is about 68% forested.[2]