Pequea Creek (/ˈpɛkweɪ/ PECK-way; Pennsylvania German: Beckweh Grick) is a tributary of the Susquehanna River that runs for 49.2 miles (79.2 km)[1] from the eastern border of Lancaster County and Chester County, Pennsylvania to the village of Pequea, about 5 miles (8 km) above the hydroelectric dam at Holtwood along the Susquehanna River in Lancaster County.