Dobson #1 is a privately owned earth dam located in Marion, Tennessee, with a primary purpose of recreation. Completed in 2006, this dam stands at a hydraulic height of 35 feet and a structural height of 38 feet, with a length of 300 feet. It has a storage capacity of 137 acre-feet and a normal storage capacity of 112 acre-feet, covering a surface area of 8 acres.

Although classified as having a low hazard potential, Dobson #1 is considered to have a moderate risk level. The dam is uncontrolled, with no spillway width specified. It has not been rated for condition assessment, and the last inspection was conducted in January 2019, with an inspection frequency of 5 years. While the dam does not fall under state regulation or jurisdiction, it is monitored by the Tennessee primary source agency.

For water resource and climate enthusiasts, Dobson #1 represents a recreational structure in the Tennessee landscape, offering opportunities for outdoor activities in a picturesque setting. The dam's construction and storage capacity provide insight into the region's water management practices and the potential impact of climate change on local water resources. Continued monitoring and maintenance of Dobson #1 are essential to ensure the safety and longevity of this important infrastructure.