J. M. is a privately owned dam located in Huerfano County, Colorado, specifically in the city of Gardner. Built in 1915, this earth dam stands at a height of 12 feet and spans a length of 540 feet. With a primary purpose of fire protection, stock, or small fish pond, J. M. also serves for irrigation and recreation, showcasing its versatility in water resource management.

Despite its low hazard potential and fair condition assessment, J. M. poses a high risk due to its location and structural characteristics. With a maximum storage capacity of 300 acre-feet and a surface area of 50 acres, this dam plays a crucial role in water storage and management in the area. However, the lack of a spillway and limited drainage area highlight the importance of continued monitoring and maintenance to ensure the safety and effectiveness of J. M. for both water resource and climate enthusiasts.

In addition to being regulated by the Colorado Department of Water Resources and undergoing inspections every six years, J. M. is a key component in the local water infrastructure, providing essential services for fire protection, livestock, and recreation. As climate change continues to impact water resources, understanding and maintaining structures like J. M. will be essential in ensuring sustainable water management practices for the future.