Poysippi, located in Waushara County, Wisconsin, is home to the Pine Creek dam, a hydroelectric facility completed in 1935 with a primary purpose of generating electricity. With a dam height of 9 feet and a storage capacity of 250 acre-feet, the facility also serves flood risk reduction and recreation purposes. The dam, with a length of 204 feet and a surface area of 57 acres, controls a drainage area of 131 square miles and has a maximum discharge capacity of 1465 cubic feet per second.

Managed by the Federal Energy Regulatory Commission (FERC), the Pine Creek dam has a low hazard potential and a moderate risk assessment score. While the dam is not state-regulated, it is subject to federal oversight for operations, inspections, and enforcement. The spillway, with a width of 12 feet, is uncontrolled, and the facility has not been assessed for condition or emergency action plan preparedness in recent years. Despite its age, the dam continues to play a vital role in the region's water resource management and energy production efforts.