Beaver, also known as Enlargement #1 or Beaver Dam, is a privately owned water structure located in Paonia, Colorado. This earth-type dam, completed in 1958, primarily serves irrigation purposes for the surrounding area. With a height of 100 feet and a hydraulic height of 113 feet, Beaver has a storage capacity of 1,850 acre-feet and covers a surface area of 36 acres.

Situated on Minnesota Creek-TR in Gunnison County, Beaver poses a high hazard potential due to its fair condition assessment. Despite being regulated by the State of Colorado's Department of Water Resources, the dam lacks a spillway and relies on slide gates for water release. The inspection frequency is set at once per year, with the last assessment conducted in August 2020. Emergency action plans are in place, although their last revision dates back to June 2015.

Given its importance for irrigation and potential risks associated with its condition, Beaver serves as a focal point for water resource and climate enthusiasts in the region. The dam's location in a scenic area, combined with its historical significance and ongoing management challenges, make it a compelling case study for those interested in sustainable water infrastructure and environmental stewardship.