Nissen #2 is a privately owned earth dam located in Broomfield, Colorado, with a primary purpose of irrigation. Completed in 1974, this dam stands at a height of 9 feet and has a length of 2300 feet, providing a storage capacity of 291 acre-feet. Situated on Big Dry Creek-OS, this dam has a spillway width of 160 feet and a maximum discharge of 1005 cubic feet per second, making it a crucial structure for managing water resources in the area.

With a high hazard potential but a satisfactory condition assessment as of December 2020, Nissen #2 is regularly inspected by the state regulatory agency to ensure its safety and compliance with regulations. The dam's risk assessment categorizes it as moderate, prompting the need for ongoing risk management measures. The presence of this dam plays a vital role in supporting irrigation activities in the region, highlighting the importance of water infrastructure for agricultural sustainability and climate resilience in Colorado.

As water resource and climate enthusiasts, understanding the significance of structures like Nissen #2 is crucial for ensuring the sustainable management of water systems in the face of changing environmental conditions. By monitoring and maintaining dams like Nissen #2, stakeholders can work towards enhancing water security and resilience in the region, ultimately contributing to the long-term sustainability of Colorado's water resources in a changing climate.