| Watrous Run | |
| Name Other: | Tributary to East Branch Tunungwant Creek |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Map Caption: | Location of Watrous Run mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | McKean |
| Subdivision Type4: | Borough |
| Subdivision Name4: | Lewis Run |
| Length: | 1miles[1] |
| Discharge1 Location: | East Branch Tunungwant Creek |
| Discharge1 Avg: | 1.01cuft/s at mouth with East Branch Tunungwant Creek[2] |
| Source1: | Kissem Run divide |
| Source1 Location: | about 1-mile northwest of Lewis Run, Pennsylvania |
| Source1 Coordinates: | 41.885°N -78.6786°W[3] |
| Source1 Elevation: | 2000feet |
| Mouth: | East Branch Tunungwant Creek |
| Mouth Location: | Lewis Run, Pennsylvania |
| Mouth Coordinates: | 41.8801°N -78.6584°W |
| Mouth Elevation: | 1516feet |
| Progression: | East Branch Tunungwant Creek → Tunungwant Creek → Allegheny River → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Allegheny River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | US 219 |
Watrous Run is a 1miles long first-order tributary to East Branch Tunungwant Creek.[1] This is the only stream of this name in the United States.[3]
Watrous Run rises about northwest of Lewis Run, Pennsylvania, and then flows southeast to meet East Branch Tunungwant Creek at Lewis Run.
Watrous Run drains of area, receives about of precipitation, and is about 91.36% forested.[2]