Mock Bass is a privately owned earth dam located in Dayton, Wyoming, along the Mock Gulch river. Built in 1966 by designer Walter J Pilch, this dam stands at a height of 40 feet and serves multiple purposes such as fire protection, stock watering, and small fish pond management. With a storage capacity of 127 acre-feet, it covers an area of 8 acres and has a spillway width of 10 feet.

Despite its low hazard potential, Mock Bass is currently assessed as being in poor condition as of the last inspection in August 2017. The dam has a moderate risk level, with a risk assessment score of 3 out of 5. While it is regularly inspected and maintained by state authorities, there are no emergency action plans in place, raising concerns about its ability to withstand potential hazards. Situated in a picturesque location in Sheridan County, Wyoming, Mock Bass is a notable structure for water resource and climate enthusiasts to monitor closely.