North Poudre # 4 is a privately owned irrigation dam located in Larimer County, Colorado, near Wellington. Built in 1956, this earth dam stands at 24 feet high and spans 1400 feet in length. It serves the primary purpose of irrigation and has a storage capacity of 2264 acre-feet, with a maximum discharge of 1600 cubic feet per second.

The dam is regulated and inspected by the Colorado Division of Water Resources, ensuring its safety and satisfactory condition. With a significant hazard potential, the dam is considered to have a moderate risk level, prompting the need for risk management measures. Its spillway is uncontrolled and 50 feet wide, providing a crucial safety feature in case of excess water flow.

Despite its age, North Poudre # 4 continues to play a vital role in water management in the area, highlighting the importance of proper maintenance and oversight of our water resources in the face of changing climate conditions.