Zimmerman Lake in Larimer County, Colorado, is a state-regulated earth dam built in 1913 for the primary purpose of creating a fish and wildlife pond. The dam stands at a height of 10 feet and has a length of 600 feet, with a storage capacity of 238 acre-feet. The lake covers an area of 20 acres and is fed by the Joe Wright Creek. Despite its low hazard potential, the dam's condition was assessed as unsatisfactory during the last inspection in July 2013.

Located just 42 miles from Fort Collins, Zimmerman Lake offers a serene setting for outdoor enthusiasts and nature lovers. Its controlled spillway, with a width of 11 feet, helps manage the lake's water levels, while the moderate risk assessment rating indicates a need for ongoing monitoring and risk management measures. The dam is subject to state regulation, permitting, inspection, and enforcement by the Colorado Division of Water Resources, ensuring the safety and integrity of the structure for both recreational and environmental purposes.

With its picturesque surroundings and crucial role in supporting local wildlife, Zimmerman Lake serves as a vital water resource in the region. Whether it's for fishing, wildlife observation, or simply enjoying the beauty of the outdoors, this historic lake continues to be a cherished destination for those passionate about water resources and climate conservation in Colorado.