Pomona Lake No. 1, located in Jefferson County, Colorado, is a privately owned earth dam completed in 1902 for the primary purpose of flood risk reduction. This dam plays a crucial role in protecting the surrounding areas from potential flooding events, with a height of 6 feet and a hydraulic height of 9 feet. With a storage capacity of 255 acre-feet, Pomona Lake No. 1 also offers recreational opportunities for visitors, making it a versatile and valuable asset to the community.

Although the dam has a low hazard potential and is deemed to be in satisfactory condition as of its last assessment in 2009, regular inspections are conducted every 6 years to ensure its continued safety and functionality. The spillway type is uncontrolled, with a width of 23 feet, and the maximum discharge capacity is 210 cubic feet per second. Despite its age, Pomona Lake No. 1 remains a reliable structure that effectively manages water resources in the region while providing a recreational space for residents to enjoy.

Managed by the Colorado State Regulatory Agency and located on Little Dry Creek-OS, Pomona Lake No. 1 is an essential part of the local water infrastructure. With its moderate risk assessment rating and a history dating back over a century, this dam stands as a testament to the importance of effective water resource management and climate resilience in the face of changing environmental conditions.