Olds is a privately owned earth dam located in Weld County, Colorado, specifically in the city of Roggen. Built in 1918, this dam on the Lost Creek-OS river has a height of 23 feet and a length of 1100 feet, providing a storage capacity of 1700 acre-feet. With a surface area of 134 acres, the dam's primary purpose is categorized as "Other", serving various purposes beyond flood control or water supply.

Despite being classified as having a low hazard potential and a satisfactory condition assessment, Olds poses a moderate risk due to its age and the potential for various factors to impact its structural integrity. The dam features an uncontrolled spillway with a width of 200 feet, and its last inspection took place in September 2019, with a scheduled inspection frequency of every 6 years. With the dam located within the jurisdiction of the Colorado Division of Water Resources, it is subject to state regulations, permitting, inspection, and enforcement to ensure its continued safety and functionality.

For water resource and climate enthusiasts, Olds presents an opportunity to study the management and maintenance of aging infrastructure in the face of evolving environmental conditions. Understanding the risk factors associated with dams like Olds is crucial for developing effective risk management measures and ensuring the long-term resilience of water infrastructure in the region. As climate change continues to impact water resources, the maintenance and monitoring of dams like Olds will be essential in safeguarding communities and ecosystems downstream.