Weber - South Dam, located in Montezuma County, Colorado, is a vital earth dam constructed in 1902 by the USDA NRCS for irrigation purposes along the West Fork Mancos River. This privately-owned structure stands at a height of 25 feet with a hydraulic height of 25 feet and a structural height of 29 feet, stretching 961 feet in length. It has a storage capacity of 652 acre-feet, with a normal storage level of 442 acre-feet, serving multiple functions including fire protection, stock, and small fish pond management.

The dam's spillway, with a width of 220 feet, is uncontrolled, and it is equipped with a single slide (sluice gate) outlet gate. Despite being classified as having a low hazard potential, it undergoes regular inspections every six years, with the last assessment in April 2019 revealing a satisfactory condition. With a moderate risk assessment score of 3, the dam is regulated, permitted, inspected, and enforced by the Colorado Division of Water Resources, ensuring its safety and functionality for the community of Mancos and the surrounding areas.

Weber - South Dam is an essential piece of infrastructure that not only supports agricultural irrigation but also contributes to fire protection and wildlife management in the region. With its historical significance dating back over a century, this earth dam continues to play a crucial role in water resource management and climate resilience efforts in Colorado, highlighting the importance of sustainable water infrastructure in the face of changing environmental conditions.