| Gar Run | |
| Name Other: | Tributary to Brokenstraw Creek |
| Map Size: | 300 |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Gar Run mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Warren |
| Length: | 4.96miles[1] |
| Discharge1 Location: | Brokenstraw Creek |
| Discharge1 Avg: | 31.76cuft/s at mouth with Brokenstraw Creek[2] |
| Source1: | divide between Gar Run and Oil Creek |
| Source1 Location: | about 2 miles east of Sanford, Pennsylvania |
| Source1 Coordinates: | 41.7717°N -79.4994°W[3] |
| Source1 Elevation: | 1775feet[4] |
| Mouth: | Brokenstraw Creek |
| Mouth Location: | Garland, Pennsylvania |
| Mouth Coordinates: | 41.7806°N -79.4472°W |
| Mouth Elevation: | 1286feet |
| Progression: | Brokenstraw Creek → Allegheny River → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Allegheny River |
| Tributaries Left: | Hosmer Run |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Ross Hill Road, PA 27 |
Gar Run is a 4.96miles long 3rd order tributary to Brokenstraw Creek.[1] It is classed as a cold-water fishery by the Pennsylvania Fish and Boat Commission.[5]
According to the Geographic Names Information System, it has also been known historically as:[3]
Gar Run rises on the divide between it and Oil Creek in Warren County, Pennsylvania about 2 miles east of Sanford, Pennsylvania and flows northeast to meet Brokenstraw Creek at Garland.
Gar Run drains of the Pennsylvania High Plateau province and is underlaid by the Venango Formation.[6] The watershed receives an average of 42.6 in/year of precipitation and has a wetness index of 388.06.[2] The watershed is about 75% forested.