Hartstown No 15 is a state-owned recreational dam located in East Fallowfield Township, Pennsylvania, along the Shenango River. Completed in 1989, this earth dam stands at a height of 10 feet and spans a length of 8000 feet, with a storage capacity of 1290 acre-feet. With a surface area of 192 acres and a drainage area of 6.07 square miles, this dam serves as a popular spot for outdoor activities in Crawford County.

Managed by the Pennsylvania Department of Environmental Protection, Hartstown No 15 is classified as having a low hazard potential and has not been rated for condition assessment. Despite this, regular inspections are conducted every 5 years to ensure the safety and integrity of the structure. While there is no emergency action plan in place at the moment, the dam meets state regulations for permitting, inspection, and enforcement, providing a safe and enjoyable recreational space for water resource and climate enthusiasts to explore and appreciate the surrounding natural beauty of the Shenango River.