Mountain Supply # 2, also known as Round Butte, is a vital water resource infrastructure located in Larimer, Colorado, specifically in the city of Wellington. Owned and regulated by local government authorities, this dam was completed in 1904 and serves the primary purpose of irrigation. Standing at a height of 25 feet and stretching 3500 feet in length, it has a storage capacity of 1115 acre-feet, with a normal storage capacity of 715 acre-feet.

Despite its low hazard potential, Mountain Supply # 2 has been assessed as unsatisfactory in condition, with the last inspection conducted in May 2015. The risk assessment for this dam is considered high, indicating potential vulnerabilities that need to be addressed. With no spillway and limited drainage area, ensuring the safety and stability of this structure is crucial for both water supply management and climate resilience in the region. As climate change continues to impact water resources, the maintenance and upkeep of Mountain Supply # 2 will be essential for sustainable water management in the area.