Griffis is a private recreational dam in Forest Lake Township, Pennsylvania, regulated by the Pennsylvania Department of Environmental Protection. Completed in 1989, this earth dam stands at 17 feet tall and spans 300 feet in length, with a storage capacity of 110 acre-feet. Situated on the TR Middle Branch Wyalusing Creek, Griffis serves as a vital water resource for the surrounding area, with a drainage area of 0.72 square miles.

Despite its significant hazard potential, Griffis has been assessed as satisfactory in condition, with inspections conducted every two years to ensure its structural integrity. The dam's purpose primarily focuses on recreation, offering a surface area of 5 acres for outdoor activities. Located within the Susquehanna County, this dam plays a crucial role in water management and conservation efforts in the region. With its historical significance and environmental impact, Griffis stands as a testament to the intersection of water resource management and climate resilience in Pennsylvania.

As a key feature of the Baltimore District, Griffis exemplifies the importance of state-regulated infrastructure in safeguarding communities against potential hazards. Its satisfactory condition and regulatory compliance highlight the ongoing commitment to maintaining the dam's safety and operational efficiency. With its strategic location and significant storage capacity, Griffis not only provides recreational opportunities but also contributes to flood control and water supply management in the Susquehanna area. As water resource and climate enthusiasts, understanding the role of dams like Griffis is essential in promoting sustainable practices and resilience in the face of changing environmental conditions.