H A Stewart, also known as Latrobe Reservoir, is a significant water supply dam located in Ligonier Township, Pennsylvania. Built in 1920, this earth dam stands at a height of 86 feet and spans 600 feet in length, providing a storage capacity of 6250 acre-feet. The reservoir serves the primary purpose of water supply and is regulated by the Pennsylvania Department of Environmental Protection, ensuring its safety and compliance with state standards.

Situated on Trout Run in Westmoreland County, H A Stewart plays a crucial role in managing water resources for the surrounding area. With a drainage area of 5.66 square miles and a normal storage capacity of 3650 acre-feet, this dam contributes to the local ecosystem and supports the community's water needs. Despite being classified as having a high hazard potential, the dam's condition assessment is rated as fair, indicating a need for ongoing monitoring and maintenance to ensure its continued safety and functionality.

As a key infrastructure owned by the local government, H A Stewart stands as a testament to the importance of water resource management in mitigating the impacts of climate change. With its historical significance and vital role in providing water for the region, this dam serves as a reminder of the interconnectedness between water resources, climate resilience, and community well-being.