Thompson is a privately owned irrigation dam located in Weld County, Colorado, along the Big Dry Creek. Built in 1888, this earth dam stands at a height of 11 feet and has a length of 1536 feet, with a storage capacity of 265 acre-feet. The dam serves the primary purpose of irrigation, with a normal storage of 90 acre-feet and a maximum discharge capacity of 223 cubic feet per second.

Despite its age, Thompson has a low hazard potential and has not been rated for its condition assessment. The last inspection took place in July 1987, with an inspection frequency of 6 years. The risk assessment for the dam is considered high (2), although specific risk management measures, emergency action plans, and inundation maps are not currently available. Overall, Thompson presents an intriguing case study for water resource and climate enthusiasts due to its historical significance, location, and risk assessment profile.