Simmons Dam, located in Johnson County, Wyoming, was completed in 1940 and serves primarily for irrigation purposes. With a dam height of 24 feet and a hydraulic height of 19 feet, Simmons Dam has a storage capacity of 80 acre-feet and a surface area of 8 acres. The dam is constructed mainly of earth and stone materials, with a spillway width of 25 feet for uncontrolled water release.

Despite being classified as a low hazard potential structure with fair condition assessment, Simmons Dam is subject to regular inspections by state authorities, with the last inspection conducted in August 2017. The risk assessment for the dam is moderate, indicating potential concerns that need to be addressed to ensure its continued safety and functionality. With Liz Cheney representing Congressional District 00, Wyoming, where the dam is located, stakeholders and enthusiasts in water resource management and climate change may find interest in monitoring the maintenance and risk management measures associated with Simmons Dam.