Durango #1, also known as Upper Park or City Reservoir, is a rockfill dam located in La Plata County, Colorado. Completed in 1899, the dam stands at a height of 16 feet and stretches 360 feet in length, with a storage capacity of 530 acre-feet. Situated on the Florida River, this dam serves a primary purpose of water supply for the local community of Bondad.

Managed by the local government and regulated by the Colorado Division of Water Resources, Durango #1 has a low hazard potential and is classified as having a fair condition assessment. The dam's spillway, which is uncontrolled, has a width of 22 feet and a maximum discharge capacity of 223 cubic feet per second. Despite having been last inspected in 2009, with a recommended inspection frequency of every six years, the risk assessment for Durango #1 is moderate.

Water resource and climate enthusiasts will find Durango #1 to be an intriguing structure due to its historical significance, engineering design, and role in providing essential water supply to the surrounding area. As efforts continue to monitor and maintain the dam's condition, it serves as a reminder of the importance of sustainable water management practices in the face of changing climate conditions.