Mary Stead is a private dam located in the Big Muddy Oil Field in Natrona, Wyoming. Built in 1909 for irrigation purposes, this earth dam stands at a height of 14 feet and has a hydraulic height of 10 feet. With a storage capacity of 302 acre-feet, it serves the local community by regulating water from Goose Creek Offstream.

Despite its age, Mary Stead has been well-maintained, with a low hazard potential and a fair condition assessment. The dam features an uncontrolled spillway and outlet gates for water release. In the event of an emergency, the dam is inspected every 5 years to ensure its safety and the surrounding area's protection.

Climate enthusiasts will appreciate Mary Stead's role in water resource management and its contribution to irrigation in the region. As a vital piece of infrastructure, this dam exemplifies the importance of sustainable water practices and the need for ongoing monitoring and maintenance to ensure the safety of both the dam and the community it serves.