Reynolds Piney Creek Diversion Dam, also known as Texaco Diversion Dam, is a privately owned structure located in Johnson, Wyoming. Completed in 1969, this earth dam serves primarily for irrigation purposes on Piney Creek, with a maximum storage capacity of 114 acre-feet. The dam stands at a height of 22 feet with a hydraulic height of 13 feet and a length of 1850 feet.

The dam features an uncontrolled spillway with a width of 100 feet and three slide (sluice gate) outlet gates. With a significant hazard potential, the dam underwent its last inspection in April 2020 and is subject to regular state regulation, inspection, and enforcement. The risk assessment for the dam is moderate, indicating a level 3 risk, and it is situated within the Omaha District under Congressional District 00, Wyoming, represented by Liz Cheney (R).

Water resource and climate enthusiasts intrigued by the engineering and management of dams will find Reynolds Piney Creek Diversion Dam a fascinating example of private ownership and state regulation in Wyoming. The dam's design, construction, and operational features, coupled with its impact on irrigation and water storage on Piney Creek, provide a compelling case study for understanding the complexities of managing water resources in a changing climate. The dam's role in mitigating flood risks, ensuring water supply for agricultural needs, and navigating regulatory requirements offers valuable insights for sustainable water resource management in the region.