Vogler #1, also known as Jackson Reservoir, is a privately owned dam located in Westminster, Colorado. Built in 1958, this earth dam serves primarily for irrigation purposes, with a storage capacity of 50 acre-feet. Situated on Big Dry Creek-TR, Vogler #1 has a structural height of 33 feet and a hydraulic height of 28 feet, making it a vital component of the local water resource infrastructure.

Despite being categorized as a low hazard potential structure, Vogler #1 is considered to have a high risk due to certain factors. The dam, with a length of 470 feet and a surface area of 4 acres, has not been assessed for its condition since August 1991. However, it is regulated and inspected by the Colorado Division of Water Resources, ensuring compliance with state permitting and enforcement regulations.

While Vogler #1 may not be the largest or most well-known dam, its role in providing water for irrigation in the region cannot be understated. Water resource and climate enthusiasts will appreciate the significance of this structure in managing and distributing water resources in Adams County, Colorado.