Hummel, also known as Waggener Lake, is a privately owned irrigation dam located in Weld County, Colorado. This Earth-type dam was completed in 1882 and stands at a height of 15 feet, with a length of 1600 feet. It serves the primary purpose of irrigation, with a storage capacity of 414 acre-feet and a normal storage of 294 acre-feet. The dam is situated on the Little Thompson River and is regulated by the Colorado Department of Water Resources, with state permitting, inspection, and enforcement in place.

Despite its low hazard potential and satisfactory condition assessment, Hummel poses a high risk, as indicated by a risk assessment rating of 2. The dam lacks a spillway and associated structures, and there have been no modifications or inspections since November 2012. While an emergency action plan and inundation maps are not currently prepared, the dam is subject to an inspection frequency of every 6 years. The surrounding area, including the city of Johnstown, relies on this dam for agricultural water supply, emphasizing the importance of continued monitoring and maintenance to mitigate potential risks.

In the context of climate change and water resource management, Hummel serves as a crucial infrastructure for irrigation in Colorado. As water scarcity becomes an increasing concern, maintaining the integrity of dams like Hummel is essential for ensuring sustainable water supply for agricultural activities in the region. With the potential for increased extreme weather events and changing hydrological patterns, it is imperative that regulatory agencies and dam owners work together to implement necessary risk management measures and emergency preparedness plans to safeguard both the dam and the surrounding communities from potential hazards.