Pierce is a historic earth dam located in Carbon County, Wyoming, with a primary purpose of irrigation. Built in 1918, it stands at a height of 30 feet and has a hydraulic height of 25 feet. This dam holds a storage capacity of 3,711 acre-feet, with a normal storage level of 3,206 acre-feet, serving the Rock Creek Offstream in the Como Bluffs Fish Hatchery area. With a surface area of 199 acres and a drainage area of 19.5 square miles, Pierce plays a crucial role in water resource management in the region.

Despite its age, Pierce is in fair condition according to the latest assessment in August 2018. It has a high hazard potential due to its location and purpose, but the risk assessment deems it as moderate (3). The dam has an uncontrolled spillway with a width of 6 feet and two other controlled outlet gates. While it is state-regulated and inspected regularly, there are no associated structures and the dam is owned by the state of Wyoming. With Liz Cheney as the Congressional representative overseeing this area, Pierce remains an essential component of the local irrigation infrastructure.

Water resource and climate enthusiasts will find Pierce to be a fascinating example of early 20th-century engineering, serving as a testament to the importance of water management in the arid landscapes of Wyoming. The dam's location in the Sacramento District underlines its significance in maintaining water supply for agricultural activities in the region. As discussions around climate change and water scarcity intensify, understanding the role of structures like Pierce in ensuring sustainable water use becomes increasingly relevant. The dam's history, design, and operational details offer valuable insights into the intersection of water resources, infrastructure, and environmental conservation.