Johnson 41-23-4377 is a privately owned dam located in Johnson, Wyoming, along Little Bulwacker Creek. Designed by Megan Crow and completed in 2005, this earth dam stands at a height of 20 feet and has a storage capacity of 164 acre-feet. With a normal storage capacity of 89 acre-feet and a maximum discharge of 3033 cubic feet per second, this dam serves purposes such as fire protection, stock watering, and small fish pond maintenance.

Despite being a low hazard potential structure with fair condition assessment, Johnson 41-23-4377 is regulated and inspected by the state of Wyoming, with enforcement measures in place. The dam features an uncontrolled spillway with a width of 130 feet and an outlet gate valve. With a surface area of 15.02 acres and a drainage area of 10.66 square miles, this dam plays a crucial role in water resource management in the region. Water resource and climate enthusiasts will appreciate the moderate risk assessment of this dam and the measures in place to ensure its safety and functionality.