Alder Run
| Alder Run Tributary to French Creek | |
|---|---|
Location of Alder Run mouth Alder Run (the United States) | |
| Location | |
| Country | United States |
| State | Pennsylvania |
| County | Erie County |
| Physical characteristics | |
| Source | Bentley Run divide |
| • location | about 3 miles northwest of Beaver Dam, Pennsylvania |
| • coordinates | 41°56′03″N 079°48′09″W / 41.93417°N 79.80250°W |
| • elevation | 1,420 ft (430 m) |
| Mouth | French Creek |
• location | about 3.5 miles southwest of Wattsburg, Pennsylvania |
• coordinates | 41°58′16″N 079°51′40″W / 41.97111°N 79.86111°W |
• elevation | 1,243 ft (379 m) |
| Length | 4.52 mi (7.27 km) |
| Basin size | 7.07 square miles (18.3 km2) |
| Discharge | |
| • location | French Creek |
| • average | 13.68 cu ft/s (0.387 m3/s) at mouth with French Creek |
| Basin features | |
| Progression | generally northwest |
| River system | Allegheny River |
| Tributaries | |
| • left | unnamed tributaries |
| • right | unnamed tributaries |
| Bridges | Game Land Road, Fenno Road, Old Wattsburg Road, Hatch Hollow Road, PA 8, Wattsburg-Waterford Road |
Alder Run is a 4.52 mi (7.27 km) long third-order tributary to French Creek in Erie County.