Jolly No. 1 is a privately owned earth dam located on Jolly Draw in Niobrara County, Wyoming. Completed in 1952 for irrigation purposes, this dam stands at a height of 22 feet and has a storage capacity of 60 acre-feet. Despite its low hazard potential, the dam's condition was assessed as poor in 2017, indicating a need for maintenance and repairs to ensure its continued functionality and safety.

The dam's spillway is uncontrolled with a width of 75 feet, serving as a safety feature to manage excess water during periods of high flow. While the risk assessment categorizes Jolly No. 1 as moderate, ongoing inspections and enforcement by the Wyoming State Engineer's Office help mitigate potential hazards. With Liz Cheney representing the area in Congress, the dam plays a crucial role in providing water for irrigation, fire protection, and stock use in the surrounding region.

Water resource and climate enthusiasts interested in sustainable water management and infrastructure maintenance would find Jolly No. 1 an intriguing case study. The need for regular inspections, risk assessments, and maintenance highlights the importance of proactive measures in safeguarding our water resources and infrastructure against potential risks and hazards. As climate change continues to impact water availability and usage patterns, ensuring the resilience and safety of dams like Jolly No. 1 becomes increasingly vital for the communities relying on them for water supply and agricultural needs.